Math question: What is the sum of the digits in the number 1390?

To find the sum of the digits in 1390, we need to add all the individual digits together. In this case, the digits are 1, 3, 9, and 0. Adding them, we get 1 + 3 + 9 + 0 = 13. Therefore, the sum of the digits in the number 1390 is 13.

Math Question: What is the sum of all the odd numbers from 1 to 1390?

To find the sum of odd numbers up to 1390, we first need to determine the total count of odd numbers. We know that every alternate number is odd, so we divide 1390 by 2 and round up to the nearest whole number, resulting in 695 odd numbers. The formula for calculating the sum of an arithmetic sequence is Sn = (n/2)(2a + (n-1)d), where Sn is the sum, n is the count, a is the first term, and d is the common difference. Since the common difference for an odd sequence is 2, the formula becomes Sn = (695/2)(2 + (695-1)2). After evaluating this expression, the sum of all odd numbers from 1 to 1390 is 483,620. Alternatively, we can use the formula for the sum of an arithmetic sequence, Sn = (n/2)(a + l), where l is the last term. We can calculate the last term by multiplying the count of numbers (695) by the common difference (2) and adding the first term (1), resulting in 1391. Now we can substitute these values into the formula as Sn = (695/2)(1 + 1391). Evaluating this expression yields the sum of 483,620 for all the odd numbers between 1 and 1390.

Question: What is the greatest common divisor (GCD) of 1390 and the sum of its digits?

To find the GCD of 1390, we first need to determine the sum of its digits. The sum of the digits is 1 + 3 + 9 + 0 = 13. Now, let's calculate the GCD of 1390 and 13. Using Euclid's algorithm, we divide 1390 by 13, resulting in a quotient of 107 and a remainder of 1. Then we divide 13 by 1, yielding a quotient of 13 and no remainder. Therefore, the GCD of 1390 and the sum of its digits is 1.

Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

1390 (number)

1390 is an even 4-digits composite number following 1389 and preceding 1391. In scientific notation, it is written as 1.390 × 10^3. The sum of its digits is 13. It has a total of 3 prime factors and 8 positive divisors. There are 552 positive integers (up to 1390) that are relatively prime to 1390.

Interesting facts

1390 has 8 divisors, whose sum is 2520
The reverse of 1390 is 0931
Previous prime number is 5

Basic properties

Is Prime? no
Number parity even
Number length 4
Sum of Digits 13
Digital Root 4

Name

Name	one thousand three hundred ninety

Notation

Scientific notation	1.390 × 10^3
Engineering notation	1.390 × 10^3

Prime Factorization of 1390

Prime Factorization 2 × 5 × 139

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	1390	Product of the distinct prime numbers

The prime factorization of 1390 is 2 × 5 × 139. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 4, 57, 4, 841, 428, 9243, 3946, 37275, 5507, 570297, 55188, 1798377, 2877192, 6783002, 61303494, 338636324, 918499590, 2173756670, 1426881062

Basic calculations (n = 1390)

Multiplication

n×y

n×2	2780
n×3	4170
n×4	5560
n×5	6950

Division

n÷y

n÷2	695
n÷3	463.33333333333
n÷3	347.5
n÷5	278

Exponentiation

n^y

n²	1932100
n³	2685619000
n⁴	3733010410000
n⁵	5188884469900000

Nth Root

^y√n

²√n	37.282703764614
³√n	11.160190299209
⁴√n	6.1059564168617
⁵√n	4.2520950109183

Divisors of 1390

1, 2, 5, 10, 139, 278, 695, 1390

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-1389	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	1	Returns the nth root of the product of n divisors
H	Harmonic Mean	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 1390 can be divided by 8 positive divisors. The sum of these divisors (counting 1390) is 1, the average is 0.125.

Base conversion 1390

Base	System	Value
2	Binary	10101101110
3	Ternary	1220111
4	Quaternary	111232
5	Quinary	21030
6	Senary	10234
8	Octal	2556
10	Decimal	1390
12	Duodecimal	97a
16	Hexadecimal	56e
20	Vigesimal	39a
36	Base36	12m

Cryptographic Hash Functions

md5	359f38463d487e9e29bd20e24f0c050a
sha1	1a5270e66ed4ca6b0227a4ebf6a959157221262b
sha256	bb4d3bd125603e48cf30c795c427afd9da53f3a70482aa98ca3b8bbe1980d021
sha512	cb8a43c0070ab2b4661d7f24f7f5fb41c73c974a1020965720c9a176e00fbc43a05dbd0786d224f43792d4b3697fd1319d66ba992713749e654990b4adfc36a8
ripemd-160	c6bdb7a5232c658771525274c57669425d6c518e

1390 as geometric shapes

Circle

Radius = n

Diameter	2780
Circumference	8733.6275769796
Area	6069871.1660008

Sphere

Radius = n

Volume	11249494560.988
Surface area	24279484.664003
Circumference	8733.6275769796

Square

Length = n

Perimeter	5560
Area	1932100
Diagonal	1965.7568516986

Cube

Length = n

Surface area	11592600
Volume	2685619000
Space diagonal	2407.5506225207

Equilateral Triangle

Length = n

Perimeter	4170
Area	836623.84132596
Altitude	1203.7753112604

Triangular Pyramid

Length = n

Surface area	836623.84132596
Volume	316503234.43057
Height	655.25228389953