21491872 (number)

21491872 is an even 8-digits composite number following 21491871 and preceding 21491873. In scientific notation, it is written as 2.1491872 × 10^7. The sum of its digits is 34. It has a total of 7 prime factors and 24 positive divisors. There are 10483200 positive integers (up to 21491872) that are relatively prime to 21491872.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-one thousand eight hundred seventy-two

Notation

Scientific notation 2.1491872 × 10^7
Engineering notation 2.1491872 × 10^6

Prime Factorization of 21491872

Prime Factorization 2 × 2 × 2 × 2 × 2 × 41 × 16381

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 1343242
Product of the distinct prime numbers

The prime factorization of 21491872 is 2 × 2 × 2 × 2 × 2 × 41 × 16381. Since it has a total of 7 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21491872)

Multiplication

n×y
n×2 42983744
n×3 64475616
n×4 85967488
n×5 107459360

Division

n÷y
n÷2 10745936
n÷3 7163957.3333333
n÷3 5372968
n÷5 4298374.4

Exponentiation

ny
n2 461900562064384
n3 9.9271077566158E+21
n4 2.1335212923539E+29
n5 4.5853366524545E+36

Nth Root

y√n
2√n 4635.9327001155
3√n 278.02984342248
4√n 68.087683909173
5√n 29.272165308374

Divisors of 21491872

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 -21491871
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 21491872 can be divided by 24 positive divisors. The sum of these divisors (counting 21491872) is 1, the average is 0.041666666666667.

Base conversion 21491872

Base System Value
2 Binary 1010001111111000010100000
3 Ternary 1111102220022021
4 Quaternary 1101333002200
5 Quinary 21000214442
6 Senary 2044351224
8 Octal 121770240
10 Decimal 21491872
12 Duodecimal 7245514
16 Hexadecimal 147f0a0
20 Vigesimal 6e69dc
36 Base36 csn8g

Cryptographic Hash Functions

md5 8fe499440015471adbf57c3ec35f8d46
sha1 5850f18bbabd55b2d0a98729a570fdeeefcf35dd
sha256 8e677271d569211f947a5587c0f6540280aa9398bf9b190cc3530ce5393e7c7b
sha512 94cd3259649b0dfd7db39cddd3066b10bb2e5b6b42b24d5c1bba7cef76fc17c1e0333eb8dbe2ce01e2f73c54adc69c0a56f723d7d0bbe667d6730116280e64ed
ripemd-160 15f7a02810baf79e5dc3e118936ecf6c36261e55

21491872 as geometric shapes

Circle

Radius = n
Diameter 42983744
Circumference 135037414.37418
Area 1.4511034124705E+15

Sphere

Radius = n
Volume 4.1582571732771E+22
Surface area 5.8044136498819E+15
Circumference 135037414.37418

Square

Length = n
Perimeter 85967488
Area 461900562064384
Diagonal 30394096.863187

Cube

Length = n
Surface area 2771403372386304
Volume 9.9271077566158E+21
Space diagonal 37225014.253767

Equilateral Triangle

Length = n
Perimeter 64475616
Area 2.0000881038503E+14
Altitude 18612507.126883

Triangular Pyramid

Length = n
Surface area 2.0000881038503E+14
Volume 1.1699208687121E+21
Height 10131365.621062