21397956 (number)

21397956 is an even 8-digits composite number following 21397955 and preceding 21397957. In scientific notation, it is written as 2.1397956 × 10^7. The sum of its digits is 42. It has a total of 4 prime factors and 12 positive divisors. There are 7132648 positive integers (up to 21397956) that are relatively prime to 21397956.

Interesting facts

Basic properties

Name

Name twenty-one million three hundred ninety-seven thousand nine hundred fifty-six

Notation

Scientific notation 2.1397956 × 10^7
Engineering notation 2.1397956 × 10^6

Prime Factorization of 21397956

Prime Factorization 2 × 2 × 3 × 1783163

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10698978
Product of the distinct prime numbers

The prime factorization of 21397956 is 2 × 2 × 3 × 1783163. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 1, 58, 46, 653, 26, 7538, 7627, 39659, 96335, 606137, 485619, 709949, 424102, 17561178, 38266964, 626921104, 604416781, 499893208, 4156736291

Basic calculations (n = 21397956)

Multiplication

n×y
n×2 42795912
n×3 64193868
n×4 85591824
n×5 106989780

Division

n÷y
n÷2 10698978
n÷3 7132652
n÷3 5349489
n÷5 4279591.2

Exponentiation

ny
n2 457872520977936
n3 9.797536057495E+21
n4 2.0964724546669E+29
n5 4.4860225340174E+36

Nth Root

y√n
2√n 4625.7924726473
3√n 277.62427028843
4√n 68.013178668897
5√n 29.246537549129

Divisors of 21397956

1, 2, 3, 4, 6, 12, 1783163, 3566326, 5349489, 7132652, 10698978, 21397956

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21397955
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21397956 can be divided by 12 positive divisors. The sum of these divisors (counting 21397956) is 1, the average is 0.083333333333333.

Base conversion 21397956

Base System Value
2 Binary 1010001101000000111000100
3 Ternary 1111021010110220
4 Quaternary 1101220013010
5 Quinary 20434213311
6 Senary 2042344340
8 Octal 121500704
10 Decimal 21397956
12 Duodecimal 71bb0b0
16 Hexadecimal 14681c4
20 Vigesimal 6deehg
36 Base36 cqmro

Cryptographic Hash Functions

md5 1b868b4d1a9ca20d87bb05fbc91b4aa7
sha1 84b47f14ffe034e92ca6d3c847342014603dc911
sha256 be8d6da2451b1d5f4aa8dce0b7a61bfd7ada1faf77b8b4485f866d75063413ca
sha512 9f4c43a76d97d6c063590cd3b3c83d9a534d3997fa04e5d2c0bd7d2a50bcef78a5431f38bd2e608429947fe67c3fae1cc5a4a36c2acb11956397fd6ef1a8bedb
ripemd-160 915b7ab7b45f535c3240db5b504b2fff68ab42b5

21397956 as geometric shapes

Circle

Radius = n
Diameter 42795912
Circumference 134447322.74288
Area 1.4384489481849E+15

Sphere

Radius = n
Volume 4.1039823068676E+22
Surface area 5.7537957927397E+15
Circumference 134447322.74288

Square

Length = n
Perimeter 85591824
Area 457872520977936
Diagonal 30261279.582263

Cube

Length = n
Surface area 2747235125867616
Volume 9.797536057495E+21
Space diagonal 37062346.970123

Equilateral Triangle

Length = n
Perimeter 64193868
Area 1.9826461743086E+14
Altitude 18531173.485062

Triangular Pyramid

Length = n
Surface area 1.9826461743086E+14
Volume 1.1546506975291E+21
Height 10087093.194088