21813904 (number)

21813904 is an even 8-digits composite number following 21813903 and preceding 21813905. In scientific notation, it is written as 2.1813904 × 10^7. The sum of its digits is 28. It has a total of 6 prime factors and 20 positive divisors. There are 9348768 positive integers (up to 21813904) that are relatively prime to 21813904.

Interesting facts

Basic properties

Name

Name twenty-one million eight hundred thirteen thousand nine hundred four

Notation

Scientific notation 2.1813904 × 10^7
Engineering notation 2.1813904 × 10^6

Prime Factorization of 21813904

Prime Factorization 2 × 2 × 2 × 2 × 7 × 194767

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 2726738
Product of the distinct prime numbers

The prime factorization of 21813904 is 2 × 2 × 2 × 2 × 7 × 194767. Since it has a total of 6 prime factors.

Most popular turbo-numbers

1, 2, 69, 70, 325, 570, 4721, 6652, 38497, 94842, 355735, 185469, 8495172, 4168444, 49587276, 24148495, 89630580, 258906015, 3959712248, 95176399

Basic calculations (n = 21813904)

Multiplication

n×y
n×2 43627808
n×3 65441712
n×4 87255616
n×5 109069520

Division

n÷y
n÷2 10906952
n÷3 7271301.3333333
n÷3 5453476
n÷5 4362780.8

Exponentiation

ny
n2 475846407721216
n3 1.0380067856775E+22
n4 2.2642980374119E+29
n5 4.9393180015491E+36

Nth Root

y√n
2√n 4670.5357294426
3√n 279.41162161918
4√n 68.34131787903
5√n 29.359366440855

Divisors of 21813904

1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 194767, 389534, 779068, 1363369, 1558136, 2726738, 3116272, 5453476, 10906952, 21813904

20 divisors

τ Total Divisors 20
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21813903
Sum of the proper positive divisors of n
A Arithmetic Mean 0.05
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 20
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21813904 can be divided by 20 positive divisors. The sum of these divisors (counting 21813904) is 1, the average is 0.05.

Base conversion 21813904

Base System Value
2 Binary 1010011001101101010010000
3 Ternary 1112001021001101
4 Quaternary 1103031222100
5 Quinary 21041021104
6 Senary 2055314144
8 Octal 123155220
10 Decimal 21813904
12 Duodecimal 737b954
16 Hexadecimal 14cda90
20 Vigesimal 6g6ef4
36 Base36 czjps

Cryptographic Hash Functions

md5 859e2d84a4b7a1176318ae3048850333
sha1 c5d1e7f8309f2ae6058ad7768414d2fb3f4d1f15
sha256 1b0ce2bd4e8be2b964f1c1fc75f7eb506fe587315f1a6d0cc42cc3da742506c5
sha512 d518d7716bce2f7c6ca1d6e7e60d11a51e9490f1414f6b0d2157a3043449656663272b50bf0528ecec4beb7b4eb2d17fe7dbc82b570416fdb6f4a1ad1e8c1950
ripemd-160 aa17445baeb725ced25628abed51f00338ef293a

21813904 as geometric shapes

Circle

Radius = n
Diameter 43627808
Circumference 137060801.10503
Area 1.4949155787341E+15

Sphere

Radius = n
Volume 4.3479926563479E+22
Surface area 5.9796623149363E+15
Circumference 137060801.10503

Square

Length = n
Perimeter 87255616
Area 475846407721216
Diagonal 30849518.885105

Cube

Length = n
Surface area 2855078446327296
Volume 1.0380067856775E+22
Space diagonal 37782790.03943

Equilateral Triangle

Length = n
Perimeter 65441712
Area 2.0604753869307E+14
Altitude 18891395.019715

Triangular Pyramid

Length = n
Surface area 2.0604753869307E+14
Volume 1.2233027284504E+21
Height 10283172.961702