Math question: If a certain number is subtracted from 3890 and then divided by 5, the quotient is equal to half of the original number. What is the number?

Let's represent the unknown number as 'x'. According to the given information, the equation (3890 - x) / 5 = x / 2 is formed. To solve it, we first cross-multiply, giving us 2(3890 - x) = 5x. Expanding, we get 7780 - 2x = 5x. Then, by isolating the variable, we have 7x = 7780, and dividing both sides by 7, x = 1111.42857 (approximately). Therefore, the number is approximately 1111.42857.

Math question: Find the sum of all digits in the number 3890.

To find the sum of all digits in 3890, we add together the individual digits: 3 + 8 + 9 + 0 = 20. Hence, the sum of all the digits in the number 3890 is 20.

Question: If 3890 is divided by the product of the sum of its digits and the difference between the largest and smallest digits, what is the quotient?

To find the sum of the digits, we add 3 + 8 + 9 + 0, which equals 20. The difference between the largest (9) and smallest (0) digit is 9 - 0 = 9. The product of 20 and 9 is 180. Dividing 3890 by 180, we get a quotient of 21 with a remainder of 10. Therefore, the quotient is 21 (approximately).

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

3890 (number)

3890 is an even 4-digits composite number following 3889 and preceding 3891. In scientific notation, it is written as 3.890 × 10^3. The sum of its digits is 20. It has a total of 3 prime factors and 8 positive divisors. There are 1552 positive integers (up to 3890) that are relatively prime to 3890.

Interesting facts

3890 has 8 divisors, whose sum is 7020
The reverse of 3890 is 0983
Previous prime number is 5

Basic properties

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

Name

Name	three thousand eight hundred ninety

Notation

Scientific notation	3.890 × 10^3
Engineering notation	3.890 × 10^3

Prime Factorization of 3890

Prime Factorization 2 × 5 × 389

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	3890	Product of the distinct prime numbers

The prime factorization of 3890 is 2 × 5 × 389. Since it has a total of 3 prime factors.

Most popular turbo-numbers

7, 5, 62, 29, 838, 929, 8128, 1163, 90499, 50864, 386013, 504498, 7386678, 4061200, 12774959, 73024959, 893041256, 833263398, 6539660811, 1417133508

Basic calculations (n = 3890)

Multiplication

n×y

n×2	7780
n×3	11670
n×4	15560
n×5	19450

Division

n÷y

n÷2	1945
n÷3	1296.6666666667
n÷3	972.5
n÷5	778

Exponentiation

n^y

n²	15132100
n³	58863869000
n⁴	228980450410000
n⁵	890733952094900000

Nth Root

^y√n

²√n	62.369864518051
³√n	15.72714413907
⁴√n	7.8974593710921
⁵√n	5.2238406461304

Divisors of 3890

1, 2, 5, 10, 389, 778, 1945, 3890

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	-3889	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 3890 can be divided by 8 positive divisors. The sum of these divisors (counting 3890) is 1, the average is 0.125.

Base conversion 3890

Base	System	Value
2	Binary	111100110010
3	Ternary	12100002
4	Quaternary	330302
5	Quinary	111030
6	Senary	30002
8	Octal	7462
10	Decimal	3890
12	Duodecimal	2302
16	Hexadecimal	f32
20	Vigesimal	9ea
36	Base36	302

Cryptographic Hash Functions

md5	cbfe5681369338a48e2d1b63998099d6
sha1	df4ccf660d92878bd9e419dec7018b539c63c9b5
sha256	6903260f1db7eaa21285c528a83de6a64fe847318174b67fb3bcac932b84f3cc
sha512	11f28561211f46eb26718d4092503cda7a86b1c711ff258db46903a9037d7b7ba171a0465390a44b99aa21b8720cc429dbe06bd13e5ebb8a95ba1f6a19921e3c
ripemd-160	7f27381edd8c3c3903559ea1636f0f9d71fac057

3890 as geometric shapes

Circle

Radius = n

Diameter	7780
Circumference	24441.590844929
Area	47538894.193386

Sphere

Radius = n

Volume	246568397883.03
Surface area	190155576.77354
Circumference	24441.590844929

Square

Length = n

Perimeter	15560
Area	15132100
Diagonal	5501.2907576313

Cube

Length = n

Surface area	90792600
Volume	58863869000
Space diagonal	6737.6776414429

Equilateral Triangle

Length = n

Perimeter	11670
Area	6552391.5063033
Altitude	3368.8388207215

Triangular Pyramid

Length = n

Surface area	6552391.5063033
Volume	6937173489.4628
Height	1833.7635858771