21897405 (number)

21897405 is an odd 8-digits composite number following 21897404 and preceding 21897406. In scientific notation, it is written as 2.1897405 × 10^7. The sum of its digits is 36. It has a total of 5 prime factors and 24 positive divisors. There are 11062656 positive integers (up to 21897405) that are relatively prime to 21897405.

Interesting facts

Basic properties

Name

Name twenty-one million eight hundred ninety-seven thousand four hundred five

Notation

Scientific notation 2.1897405 × 10^7
Engineering notation 2.1897405 × 10^6

Prime Factorization of 21897405

Prime Factorization 3 × 15 × 3 × 19 × 8537

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 7299135
Product of the distinct prime numbers

The prime factorization of 21897405 is 3 × 15 × 3 × 19 × 8537. Since it has a total of 5 prime factors.

Most popular turbo-numbers

4, 8, 47, 99, 83, 391, 9849, 6694, 8066, 50768, 593251, 713145, 1306134, 7311079, 48442107, 67478803, 983286263, 79936017, 405626639, 8654501543

Basic calculations (n = 21897405)

Multiplication

n×y
n×2 43794810
n×3 65692215
n×4 87589620
n×5 109487025

Division

n÷y
n÷2 10948702.5
n÷3 7299135
n÷3 5474351.25
n÷5 4379481

Exponentiation

ny
n2 479496345734025
n3 1.0499725678558E+22
n4 2.2991674557228E+29
n5 5.0345800940783E+36

Nth Root

y√n
2√n 4679.4663157245
3√n 279.76768570491
4√n 68.406624794127
5√n 29.381808928735

Divisors of 21897405

1, 3, 9, 15, 19, 45, 57, 135, 171, 285, 855, 2565, 8537, 25611, 76833, 128055, 162203, 384165, 486609, 1152495, 1459827, 2433045, 7299135, 21897405

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 -21897404
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 21897405 can be divided by 24 positive divisors. The sum of these divisors (counting 21897405) is 1, the average is 0.041666666666667.

Base conversion 21897405

Base System Value
2 Binary 1010011100010000010111101
3 Ternary 1112012111121000
4 Quaternary 1103202002331
5 Quinary 21101204110
6 Senary 2101200513
8 Octal 123420275
10 Decimal 21897405
12 Duodecimal 7400139
16 Hexadecimal 14e20bd
20 Vigesimal 6gh3a5
36 Base36 d1c59

Cryptographic Hash Functions

md5 ce0a2e8abac1bdd8154cff8b4096c465
sha1 baf95f948e398edf1079046129545a743a74dc18
sha256 124fed7d4d7b9134e04025183d6ae898c3d4ce9b68f3bd1ddf4d7a37ae63d6ff
sha512 d97aecea1c0d4612e44847d10d5df9d94089476190a442fe35708e62e897de65f61d6465b003e040d7f9742ece41a7dd858b75e8a7daa52412f2793b7621005b
ripemd-160 82b9abe09bbe47537915552cb864da788aec04c6

21897405 as geometric shapes

Circle

Radius = n
Diameter 43794810
Circumference 137585453.36136
Area 1.5063821971812E+15

Sphere

Radius = n
Volume 4.3981148075288E+22
Surface area 6.0255287887247E+15
Circumference 137585453.36136

Square

Length = n
Perimeter 87589620
Area 479496345734025
Diagonal 30967607.131776

Cube

Length = n
Surface area 2876978074404150
Volume 1.0499725678558E+22
Space diagonal 37927418.013913

Equilateral Triangle

Length = n
Perimeter 65692215
Area 2.0762800821374E+14
Altitude 18963709.006956

Triangular Pyramid

Length = n
Surface area 2.0762800821374E+14
Volume 1.2374045379845E+21
Height 10322535.710592