21813912 (number)

21813912 is an even 8-digits composite number following 21813911 and preceding 21813913. In scientific notation, it is written as 2.1813912 × 10^7. The sum of its digits is 27. It has a total of 5 prime factors and 16 positive divisors. There are 7271280 positive integers (up to 21813912) that are relatively prime to 21813912.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1813912 × 10^7
Engineering notation 2.1813912 × 10^6

Prime Factorization of 21813912

Prime Factorization 2 × 2 × 2 × 9 × 302971

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 5453478
Product of the distinct prime numbers

The prime factorization of 21813912 is 2 × 2 × 2 × 9 × 302971. Since it has a total of 5 prime factors.

Most popular turbo-numbers

5, 2, 94, 68, 983, 216, 8288, 9544, 65596, 24836, 678232, 837893, 588810, 377702, 50595666, 58970969, 645546573, 276065156, 7216427855, 5252357267

Basic calculations (n = 21813912)

Multiplication

n×y
n×2 43627824
n×3 65441736
n×4 87255648
n×5 109069560

Division

n÷y
n÷2 10906956
n÷3 7271304
n÷3 5453478
n÷5 4362782.4

Exponentiation

ny
n2 475846756743744
n3 1.0380079277093E+22
n4 2.2643013590354E+29
n5 4.9393270587479E+36

Nth Root

y√n
2√n 4670.5365858753
3√n 279.41165577618
4√n 68.341324144878
5√n 29.359368594297

Divisors of 21813912

1, 2, 4, 8, 9, 18, 36, 72, 302971, 605942, 1211884, 2423768, 2726739, 5453478, 10906956, 21813912

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21813911
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21813912 can be divided by 16 positive divisors. The sum of these divisors (counting 21813912) is 1, the average is 0.0625.

Base conversion 21813912

Base System Value
2 Binary 1010011001101101010011000
3 Ternary 1112001021001200
4 Quaternary 1103031222120
5 Quinary 21041021122
6 Senary 2055314200
8 Octal 123155230
10 Decimal 21813912
12 Duodecimal 737b960
16 Hexadecimal 14cda98
20 Vigesimal 6g6efc
36 Base36 czjq0

Cryptographic Hash Functions

md5 5c30ebb7f2a0af7a20e987f6320dd50d
sha1 2ed3fa8d13df11d08cd884ae8ec2eb1db1f2a316
sha256 008d46f5751f7f821717661c8a0c6fc0e2ab12fab664a07a6d06fba13ac79cd4
sha512 f473821ad5dfabbfd41711cca534df416e39fc6dbdc23db0343132bf8dbaf67eb7e990a38a7be47fc69c647ba1bb6f0a9947c49cc9591b3d454567515ac1ed7f
ripemd-160 aeac125c7dc71618e346125d823eb46e23c44f61

21813912 as geometric shapes

Circle

Radius = n
Diameter 43627824
Circumference 137060851.37051
Area 1.4949166752207E+15

Sphere

Radius = n
Volume 4.3479974400795E+22
Surface area 5.9796667008827E+15
Circumference 137060851.37051

Square

Length = n
Perimeter 87255648
Area 475846756743744
Diagonal 30849530.198813

Cube

Length = n
Surface area 2855080540462464
Volume 1.0380079277093E+22
Space diagonal 37782803.895836

Equilateral Triangle

Length = n
Perimeter 65441736
Area 2.0604768982426E+14
Altitude 18891401.947918

Triangular Pyramid

Length = n
Surface area 2.0604768982426E+14
Volume 1.2233040743478E+21
Height 10283176.732938