21909451 (number)

21909451 is an odd 8-digits composite number following 21909450 and preceding 21909452. In scientific notation, it is written as 2.1909451 × 10^7. The sum of its digits is 31. It has a total of 4 prime factors and 12 positive divisors. There are 20558304 positive integers (up to 21909451) that are relatively prime to 21909451.

Interesting facts

Basic properties

Name

Name twenty-one million nine hundred nine thousand four hundred fifty-one

Notation

Scientific notation 2.1909451 × 10^7
Engineering notation 2.1909451 × 10^6

Prime Factorization of 21909451

Prime Factorization 19 × 443 × 19 × 137

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 1153129
Product of the distinct prime numbers

The prime factorization of 21909451 is 19 × 443 × 19 × 137. Since it has a total of 4 prime factors.

Most popular turbo-numbers

8, 7, 78, 92, 718, 933, 4933, 2826, 41218, 71864, 548607, 866032, 3650163, 7884984, 99383037, 20254214, 219908120, 963504225, 1198710229, 6543192720

Basic calculations (n = 21909451)

Multiplication

n×y
n×2 43818902
n×3 65728353
n×4 87637804
n×5 109547255

Division

n÷y
n÷2 10954725.5
n÷3 7303150.3333333
n÷3 5477362.75
n÷5 4381890.2

Exponentiation

ny
n2 480024043121401
n3 1.051706325159E+22
n4 2.3042308197462E+29
n5 5.0484432237918E+36

Nth Root

y√n
2√n 4680.7532513475
3√n 279.81897738016
4√n 68.416030660566
5√n 29.385040867999

Divisors of 21909451

1, 19, 137, 361, 443, 2603, 8417, 49457, 60691, 159923, 1153129, 21909451

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21909450
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21909451 can be divided by 12 positive divisors. The sum of these divisors (counting 21909451) is 1, the average is 0.083333333333333.

Base conversion 21909451

Base System Value
2 Binary 1010011100100111111001011
3 Ternary 1112020010010011
4 Quaternary 1103210333023
5 Quinary 21102100301
6 Senary 2101332351
8 Octal 123447713
10 Decimal 21909451
12 Duodecimal 74070b7
16 Hexadecimal 14e4fcb
20 Vigesimal 6gidcb
36 Base36 d1lfv

Cryptographic Hash Functions

md5 07e23096ab5b9b1061d865d32260ad42
sha1 470aaa997dd87e8f8efb029fedc8408e0353d503
sha256 d748d4a9652a000f0574b52093c5311eee8eaa6a38d8c3916088fbfd26080396
sha512 81e9158e4bb0b1f0bfadb2d8019914c769bd7de8188e4e1103c7fd92cc784963fde8679d7392428cae54d1bb1f3ef28b973a58cad5b346608bcedae2077db9f8
ripemd-160 13d42900be578c004b7e44d12e2c446f921d1826

21909451 as geometric shapes

Circle

Radius = n
Diameter 43818902
Circumference 137661140.61157
Area 1.5080400074167E+15

Sphere

Radius = n
Volume 4.405377153138E+22
Surface area 6.0321600296667E+15
Circumference 137661140.61157

Square

Length = n
Perimeter 87637804
Area 480024043121401
Diagonal 30984642.748349

Cube

Length = n
Surface area 2880144258728406
Volume 1.051706325159E+22
Space diagonal 37948282.297941

Equilateral Triangle

Length = n
Perimeter 65728353
Area 2.0785650788523E+14
Altitude 18974141.14897

Triangular Pyramid

Length = n
Surface area 2.0785650788523E+14
Volume 1.2394477905612E+21
Height 10328214.24945