21491628 (number)

21491628 is an even 8-digits composite number following 21491627 and preceding 21491629. In scientific notation, it is written as 2.1491628 × 10^7. The sum of its digits is 33. It has a total of 4 prime factors and 12 positive divisors. There are 7163872 positive integers (up to 21491628) that are relatively prime to 21491628.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-one thousand six hundred twenty-eight

Notation

Scientific notation 2.1491628 × 10^7
Engineering notation 2.1491628 × 10^6

Prime Factorization of 21491628

Prime Factorization 2 × 2 × 3 × 1790969

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10745814
Product of the distinct prime numbers

The prime factorization of 21491628 is 2 × 2 × 3 × 1790969. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 10, 47, 34, 658, 836, 9013, 4513, 69573, 59482, 426655, 752480, 3805027, 958948, 19077330, 65644054, 704947373, 312975141, 6002180940, 990016514

Basic calculations (n = 21491628)

Multiplication

n×y
n×2 42983256
n×3 64474884
n×4 85966512
n×5 107458140

Division

n÷y
n÷2 10745814
n÷3 7163876
n÷3 5372907
n÷5 4298325.6

Exponentiation

ny
n2 461890074090384
n3 9.926769649243E+21
n4 2.1334244054322E+29
n5 4.585076368767E+36

Nth Root

y√n
2√n 4635.9063838693
3√n 278.02879124892
4√n 68.087490656282
5√n 29.272098841937

Divisors of 21491628

1, 2, 3, 4, 6, 12, 1790969, 3581938, 5372907, 7163876, 10745814, 21491628

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 -21491627
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 21491628 can be divided by 12 positive divisors. The sum of these divisors (counting 21491628) is 1, the average is 0.083333333333333.

Base conversion 21491628

Base System Value
2 Binary 1010001111110111110101100
3 Ternary 1111102212222020
4 Quaternary 1101332332230
5 Quinary 21000213003
6 Senary 2044350140
8 Octal 121767654
10 Decimal 21491628
12 Duodecimal 7245350
16 Hexadecimal 147efac
20 Vigesimal 6e6918
36 Base36 csn1o

Cryptographic Hash Functions

md5 a07a878a91419f74d867d7e0ff6e0ca9
sha1 7740b2d2593e0db4d6c25d2becbef88b191ccd6f
sha256 96f84b685103e27c85f4f8d67bd5c3f0d754d5449fc7d1b3aaa9930d077d0d33
sha512 f061222fcaac4e4c77077998d349e90c05e8e42b234834a408adfdf392ef58e869c2e22d4b0e5a20db09533374f4fca34fd3650fe785b3524e9451cf55350aba
ripemd-160 ae4217aa74ec910510d5f19373da445cce2967e8

21491628 as geometric shapes

Circle

Radius = n
Diameter 42983256
Circumference 135035881.27697
Area 1.4510704635284E+15

Sphere

Radius = n
Volume 4.158115547192E+22
Surface area 5.8042818541136E+15
Circumference 135035881.27697

Square

Length = n
Perimeter 85966512
Area 461890074090384
Diagonal 30393751.795077

Cube

Length = n
Surface area 2771340444542304
Volume 9.926769649243E+21
Space diagonal 37224591.63337

Equilateral Triangle

Length = n
Perimeter 64474884
Area 2.0000426895907E+14
Altitude 18612295.816685

Triangular Pyramid

Length = n
Surface area 2.0000426895907E+14
Volume 1.1698810223761E+21
Height 10131250.598359