21813918 (number)

21813918 is an even 8-digits composite number following 21813917 and preceding 21813919. In scientific notation, it is written as 2.1813918 × 10^7. The sum of its digits is 33. It has a total of 5 prime factors and 24 positive divisors. There are 6232464 positive integers (up to 21813918) that are relatively prime to 21813918.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1813918 × 10^7
Engineering notation 2.1813918 × 10^6

Prime Factorization of 21813918

Prime Factorization 2 × 3 × 7 × 7 × 74197

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 3116274
Product of the distinct prime numbers

The prime factorization of 21813918 is 2 × 3 × 7 × 7 × 74197. Since it has a total of 5 prime factors.

Most popular turbo-numbers

9, 9, 48, 5, 224, 10, 7031, 449, 30045, 14361, 191865, 405191, 5334887, 3580995, 43670330, 51848645, 380918096, 589487209, 2619464607, 7932154798

Basic calculations (n = 21813918)

Multiplication

n×y
n×2 43627836
n×3 65441754
n×4 87255672
n×5 109069590

Division

n÷y
n÷2 10906959
n÷3 7271306
n÷3 5453479.5
n÷5 4362783.6

Exponentiation

ny
n2 475847018510724
n3 1.0380087842337E+22
n4 2.2643038502555E+29
n5 4.9393338516557E+36

Nth Root

y√n
2√n 4670.5372281998
3√n 279.41168139392
4√n 68.341328844264
5√n 29.359370209378

Divisors of 21813918

1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 147, 294, 74197, 148394, 222591, 445182, 519379, 1038758, 1558137, 3116274, 3635653, 7271306, 10906959, 21813918

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21813917
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21813918 can be divided by 24 positive divisors. The sum of these divisors (counting 21813918) is 1, the average is 0.041666666666667.

Base conversion 21813918

Base System Value
2 Binary 1010011001101101010011110
3 Ternary 1112001021001220
4 Quaternary 1103031222132
5 Quinary 21041021133
6 Senary 2055314210
8 Octal 123155236
10 Decimal 21813918
12 Duodecimal 737b966
16 Hexadecimal 14cda9e
20 Vigesimal 6g6efi
36 Base36 czjq6

Cryptographic Hash Functions

md5 71e2ce2bcffa9b48ab55a866b787b576
sha1 88282b678923cc6d292dda3022995ad0be784069
sha256 aa3f28fd2c03f64cd62c6002a8c069b1a1086776a343dc676e0483dc7dfef9b5
sha512 12dd5e282285b4a6d7345cc49d87db1700db3fc0ec631b2c9f6493d1c2d30948880bf61ea048768e81270963e8426e1b2237cdfd77642418f7120c85ff8ce89a
ripemd-160 efccb5518f4d4636e03ee0d4afadbc0e8e933dc2

21813918 as geometric shapes

Circle

Radius = n
Diameter 43627836
Circumference 137060889.06962
Area 1.4949174975859E+15

Sphere

Radius = n
Volume 4.3480010278805E+22
Surface area 5.9796699903436E+15
Circumference 137060889.06962

Square

Length = n
Perimeter 87255672
Area 475847018510724
Diagonal 30849538.684095

Cube

Length = n
Surface area 2855082111064344
Volume 1.0380087842337E+22
Space diagonal 37782814.288141

Equilateral Triangle

Length = n
Perimeter 65441754
Area 2.0604780317269E+14
Altitude 18891407.144071

Triangular Pyramid

Length = n
Surface area 2.0604780317269E+14
Volume 1.2233050837715E+21
Height 10283179.561365