Math question: What is the sum of the digits of the number 1397?

The sum of the digits of 1397 can be found by adding 1 + 3 + 9 + 7, which equals 20.

Math question: What is the largest prime factor of the number 1397?

To find the largest prime factor of 1397, we need to check for prime numbers that divide it. Starting from 2, the first prime number, we divide 1397 by primes successively until we reach a point where the quotient is 1 or the number itself. By prime factorizing 1397, we find that 1397 is actually a prime number since it cannot be divided evenly by any other prime. Therefore, the largest prime factor of 1397 is 1397 itself.

Question: Find the sum of the first 15 multiples of 1397, excluding the number itself.

To find the sum of multiples of 1397, we can use the arithmetic series formula. The first multiple of 1397 is 1397 itself, so we need to find the sum of the next 14 multiples. The common difference is also 1397 since we are adding the same number each time. Let's call the sum S.Using the formula S = (n/2)(2a + (n-1)d), where n is the number of terms, a is the first term, and d is the common difference, we substitute the values to get: S = (14/2)(2*1397 + (14-1)*1397) = 7(2*1397 + 13*1397) = 7(15*1397) = 7*20955 = 146685. Therefore, the sum of the first 15 multiples of 1397, excluding the number itself, is 146,685.

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

1397 (number)

1397 is an odd 4-digits composite number following 1396 and preceding 1398. In scientific notation, it is written as 1.397 × 10^3. The sum of its digits is 20. It has a total of 2 prime factors and 4 positive divisors. There are 1260 positive integers (up to 1397) that are relatively prime to 1397.

Interesting facts

1397 has 4 divisors, whose sum is 1536
The reverse of 1397 is 7931
Previous prime number is 11

Basic properties

Is Prime? no
Number parity odd
Number length 4
Sum of Digits 20
Digital Root 2

Name

Name	one thousand three hundred ninety-seven

Notation

Scientific notation	1.397 × 10^3
Engineering notation	1.397 × 10^3

Prime Factorization of 1397

Prime Factorization 11 × 127

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	1397	Product of the distinct prime numbers

The prime factorization of 1397 is 11 × 127. Since it has a total of 2 prime factors.

Most popular turbo-numbers

3, 3, 73, 6, 565, 390, 9068, 2205, 9128, 37498, 97041, 186188, 2700626, 3864185, 61080035, 47237657, 36322647, 644851529, 9540235353, 5251647664

Basic calculations (n = 1397)

Multiplication

n×y

n×2	2794
n×3	4191
n×4	5588
n×5	6985

Division

n÷y

n÷2	698.5
n÷3	465.66666666667
n÷3	349.25
n÷5	279.4

Exponentiation

n^y

n²	1951609
n³	2726397773
n⁴	3808777688881
n⁵	5320862431366757

Nth Root

^y√n

²√n	37.376463182062
³√n	11.178893071112
⁴√n	6.1136292970756
⁵√n	4.2563690955238

Divisors of 1397

1, 11, 127, 1397

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-1396	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 1397 can be divided by 4 positive divisors. The sum of these divisors (counting 1397) is 1, the average is 0.25.

Base conversion 1397

Base	System	Value
2	Binary	10101110101
3	Ternary	1220202
4	Quaternary	111311
5	Quinary	21042
6	Senary	10245
8	Octal	2565
10	Decimal	1397
12	Duodecimal	985
16	Hexadecimal	575
20	Vigesimal	39h
36	Base36	12t

Cryptographic Hash Functions

md5	215a71a12769b056c3c32e7299f1c5ed
sha1	184509be0d68cb4100a91be110003c769d7f6ea1
sha256	67b75961400e53222b0107d3e6c3b223d6de41c6875c202704ca580a7fece038
sha512	9e21c39bdc7d0a84bc8b7da2281513f9ab663bbb1e533687f0520fb9bbf3c821f481a136fdedcf6f66c342f45f343733d077e37fc9d39ba2f18041857d29b2b2
ripemd-160	e9ecf4a1f014093d1cbc6f330f8949d01317c793

1397 as geometric shapes

Circle

Radius = n

Diameter	2794
Circumference	8777.6098741299
Area	6131160.4970797

Sphere

Radius = n

Volume	11420308285.894
Surface area	24524641.988319
Circumference	8777.6098741299

Square

Length = n

Perimeter	5588
Area	1951609
Diagonal	1975.6563466352

Cube

Length = n

Surface area	11709654
Volume	2726397773
Space diagonal	2419.6749781737

Equilateral Triangle

Length = n

Perimeter	4191
Area	845071.48612717
Altitude	1209.8374890869

Triangular Pyramid

Length = n

Surface area	845071.48612717
Volume	321309058.9167
Height	658.55211554507