21491312 (number)

21491312 is an even 8-digits composite number following 21491311 and preceding 21491313. In scientific notation, it is written as 2.1491312 × 10^7. The sum of its digits is 23. It has a total of 6 prime factors and 20 positive divisors. There are 10646208 positive integers (up to 21491312) that are relatively prime to 21491312.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-one thousand three hundred twelve

Notation

Scientific notation 2.1491312 × 10^7
Engineering notation 2.1491312 × 10^6

Prime Factorization of 21491312

Prime Factorization 2 × 2 × 2 × 2 × 109 × 12323

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 2686414
Product of the distinct prime numbers

The prime factorization of 21491312 is 2 × 2 × 2 × 2 × 109 × 12323. Since it has a total of 6 prime factors.

Most popular turbo-numbers

6, 4, 65, 52, 899, 161, 545, 3698, 26849, 26430, 410362, 952166, 4614132, 615082, 19054637, 83275847, 930074101, 241211382, 6535861107, 6697679841

Basic calculations (n = 21491312)

Multiplication

n×y
n×2 42982624
n×3 64473936
n×4 85965248
n×5 107456560

Division

n÷y
n÷2 10745656
n÷3 7163770.6666667
n÷3 5372828
n÷5 4298262.4

Exponentiation

ny
n2 461876491481344
n3 9.9263317838909E+21
n4 2.1332989338312E+29
n5 4.5847392976233E+36

Nth Root

y√n
2√n 4635.8723019514
3√n 278.02742858607
4√n 68.087240375502
5√n 29.272012761556

Divisors of 21491312

1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 12323, 24646, 49292, 98584, 197168, 1343207, 2686414, 5372828, 10745656, 21491312

20 divisors

τ Total Divisors 20
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21491311
Sum of the proper positive divisors of n
A Arithmetic Mean 0.05
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 20
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491312 can be divided by 20 positive divisors. The sum of these divisors (counting 21491312) is 1, the average is 0.05.

Base conversion 21491312

Base System Value
2 Binary 1010001111110111001110000
3 Ternary 1111102212112112
4 Quaternary 1101332321300
5 Quinary 21000210222
6 Senary 2044344452
8 Octal 121767160
10 Decimal 21491312
12 Duodecimal 7245128
16 Hexadecimal 147ee70
20 Vigesimal 6e685c
36 Base36 csmsw

Cryptographic Hash Functions

md5 9469a6823b2ea73fe04f92d4630f9ff5
sha1 75bd358ff64ea8c5e1ed0f08ffb451091ac23402
sha256 034df23417a0b73493c45576a9d960e4f46f8525153b09b09a1ecb05fde3b9c6
sha512 34d1a9f616029519e572855cd85dad844f847249bcb7bfe1db88d8a59773ad5caabb8b24855fac6a19eb8dd3c3849b74bcaf6ff79cc2a9309ed1687bdc86fed8
ripemd-160 bb223ee92bd53da1eae594b3802afe49256bde2e

21491312 as geometric shapes

Circle

Radius = n
Diameter 42982624
Circumference 135033895.79041
Area 1.4510277925036E+15

Sphere

Radius = n
Volume 4.1579321345822E+22
Surface area 5.8041111700145E+15
Circumference 135033895.79041

Square

Length = n
Perimeter 85965248
Area 461876491481344
Diagonal 30393304.903592

Cube

Length = n
Surface area 2771258948888064
Volume 9.9263317838909E+21
Space diagonal 37224044.305315

Equilateral Triangle

Length = n
Perimeter 64473936
Area 1.9999838751684E+14
Altitude 18612022.152657

Triangular Pyramid

Length = n
Surface area 1.9999838751684E+14
Volume 1.1698294194495E+21
Height 10131101.634531