21479985 (number)

21479985 is an odd 8-digits composite number following 21479984 and preceding 21479986. In scientific notation, it is written as 2.1479985 × 10^7. The sum of its digits is 45. It has a total of 6 prime factors and 56 positive divisors. There are 11158560 positive integers (up to 21479985) that are relatively prime to 21479985.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred seventy-nine thousand nine hundred eighty-five

Notation

Scientific notation 2.1479985 × 10^7
Engineering notation 2.1479985 × 10^6

Prime Factorization of 21479985

Prime Factorization 5 × 3 × 27 × 9 × 71 × 83

Composite number
ω Distinct Factors 6
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 21479985
Product of the distinct prime numbers

The prime factorization of 21479985 is 5 × 3 × 27 × 9 × 71 × 83. Since it has a total of 6 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21479985)

Multiplication

n×y
n×2 42959970
n×3 64439955
n×4 85919940
n×5 107399925

Division

n÷y
n÷2 10739992.5
n÷3 7159995
n÷3 5369996.25
n÷5 4295997

Exponentiation

ny
n2 461389755600225
n3 9.9106450294465E+21
n4 2.1288050657284E+29
n5 4.5726700879769E+36

Nth Root

y√n
2√n 4634.6504722579
3√n 277.97857519963
4√n 68.078267253639
5√n 29.268926546893

Divisors of 21479985

56 divisors

τ Total Divisors 56
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21479984
Sum of the proper positive divisors of n
A Arithmetic Mean 0.017857142857143
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 56
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21479985 can be divided by 56 positive divisors. The sum of these divisors (counting 21479985) is 1, the average is 0.017857142857143.

Base conversion 21479985

Base System Value
2 Binary 1010001111100001000110001
3 Ternary 1111102022000000
4 Quaternary 1101330020301
5 Quinary 20444324420
6 Senary 2044220213
8 Octal 121741061
10 Decimal 21479985
12 Duodecimal 723a669
16 Hexadecimal 147c231
20 Vigesimal 6e4jj5
36 Base36 cse29

Cryptographic Hash Functions

md5 a865dbdd98ea169b45d7cd822c5c4582
sha1 4343302833c035dceb4af6bc8239da1ba9420e11
sha256 98bd7544da85bc526c38f182dc9aa2de7c8826f9779db12f9090d33a430b2724
sha512 643d9194f4195a41fa7712fe84ea07a6953ae972d1cf40abc0ca9b3ba97aa3774bdbbb4c58886047a5339f9b927630fe9c685ea2282f08b56cb213b6bb640769
ripemd-160 fd8289ffc7188357714b53bec5577e4e93d1df70

21479985 as geometric shapes

Circle

Radius = n
Diameter 42959970
Circumference 134962726.15044
Area 1.4494986666353E+15

Sphere

Radius = n
Volume 4.151361282246E+22
Surface area 5.797994666541E+15
Circumference 134962726.15044

Square

Length = n
Perimeter 85919940
Area 461389755600225
Diagonal 30377286.106571

Cube

Length = n
Surface area 2768338533601350
Volume 9.9106450294465E+21
Space diagonal 37204425.365817

Equilateral Triangle

Length = n
Perimeter 64439955
Area 1.9978762469784E+14
Altitude 18602212.682909

Triangular Pyramid

Length = n
Surface area 1.9978762469784E+14
Volume 1.1679807177091E+21
Height 10125762.035524