21491372 (number)

21491372 is an even 8-digits composite number following 21491371 and preceding 21491373. In scientific notation, it is written as 2.1491372 × 10^7. The sum of its digits is 29. It has a total of 4 prime factors and 12 positive divisors. There are 9210576 positive integers (up to 21491372) that are relatively prime to 21491372.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1491372 × 10^7
Engineering notation 2.1491372 × 10^6

Prime Factorization of 21491372

Prime Factorization 2 × 2 × 7 × 767549

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10745686
Product of the distinct prime numbers

The prime factorization of 21491372 is 2 × 2 × 7 × 767549. Since it has a total of 4 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21491372)

Multiplication

n×y
n×2 42982744
n×3 64474116
n×4 85965488
n×5 107456860

Division

n÷y
n÷2 10745686
n÷3 7163790.6666667
n÷3 5372843
n÷5 4298274.4

Exponentiation

ny
n2 461879070442384
n3 9.9264149218915E+21
n4 2.1333227571272E+29
n5 4.5848032969486E+36

Nth Root

y√n
2√n 4635.8787732209
3√n 278.02768732055
4√n 68.087287897381
5√n 29.27202910601

Divisors of 21491372

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 -21491371
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 21491372 can be divided by 12 positive divisors. The sum of these divisors (counting 21491372) is 1, the average is 0.083333333333333.

Base conversion 21491372

Base System Value
2 Binary 1010001111110111010101100
3 Ternary 1111102212121202
4 Quaternary 1101332322230
5 Quinary 21000210442
6 Senary 2044345032
8 Octal 121767254
10 Decimal 21491372
12 Duodecimal 7245178
16 Hexadecimal 147eeac
20 Vigesimal 6e688c
36 Base36 csmuk

Cryptographic Hash Functions

md5 b78818759a49902aa29248bb2fc24ecf
sha1 9e8d125a1718d254c6acf342752ddc076d66540e
sha256 5324e370d1249869b54d61c0febab24480cfbbf0c45eb4cc64c17f959887c83e
sha512 91525c539573503bc670ae5c7043566641b40091cf27341c7fa267d70a307a05e3c89fb769dc43762e0253b304278ff01ebecaa305a634665cf139b4f5d0a909
ripemd-160 1e5955566d3eb0a35beb7ae049b73b5218d7fe7c

21491372 as geometric shapes

Circle

Radius = n
Diameter 42982744
Circumference 135034272.78153
Area 1.4510358945487E+15

Sphere

Radius = n
Volume 4.1579669593464E+22
Surface area 5.8041435781947E+15
Circumference 135034272.78153

Square

Length = n
Perimeter 85965488
Area 461879070442384
Diagonal 30393389.756405

Cube

Length = n
Surface area 2771274422654304
Volume 9.9264149218915E+21
Space diagonal 37224148.228363

Equilateral Triangle

Length = n
Perimeter 64474116
Area 1.9999950423972E+14
Altitude 18612074.114182

Triangular Pyramid

Length = n
Surface area 1.9999950423972E+14
Volume 1.1698392173568E+21
Height 10131129.918802