21131428 (number)

21131428 is an even 8-digits composite number following 21131427 and preceding 21131429. In scientific notation, it is written as 2.1131428 × 10^7. The sum of its digits is 22. It has a total of 4 prime factors and 12 positive divisors. There are 10488320 positive integers (up to 21131428) that are relatively prime to 21131428.

Interesting facts

Basic properties

Name

Name twenty-one million one hundred thirty-one thousand four hundred twenty-eight

Notation

Scientific notation 2.1131428 × 10^7
Engineering notation 2.1131428 × 10^6

Prime Factorization of 21131428

Prime Factorization 2 × 2 × 137 × 38561

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10565714
Product of the distinct prime numbers

The prime factorization of 21131428 is 2 × 2 × 137 × 38561. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 9, 86, 94, 126, 670, 1376, 6858, 4701, 28380, 204547, 590206, 2608242, 3619418, 57620854, 90518526, 650672872, 613338318, 6329318995, 6986505249

Basic calculations (n = 21131428)

Multiplication

n×y
n×2 42262856
n×3 63394284
n×4 84525712
n×5 105657140

Division

n÷y
n÷2 10565714
n÷3 7043809.3333333
n÷3 5282857
n÷5 4226285.6

Exponentiation

ny
n2 446537249319184
n3 9.4359697333064E+21
n4 1.9939551502954E+29
n5 4.2135119693697E+36

Nth Root

y√n
2√n 4596.8932987399
3√n 276.46677647129
4√n 67.800393057415
5√n 29.173314189322

Divisors of 21131428

1, 2, 4, 137, 274, 548, 38561, 77122, 154244, 5282857, 10565714, 21131428

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 -21131427
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 21131428 can be divided by 12 positive divisors. The sum of these divisors (counting 21131428) is 1, the average is 0.083333333333333.

Base conversion 21131428

Base System Value
2 Binary 1010000100111000010100100
3 Ternary 1110202120212111
4 Quaternary 1100213002210
5 Quinary 20402201203
6 Senary 2032530404
8 Octal 120470244
10 Decimal 21131428
12 Duodecimal 70b0a04
16 Hexadecimal 14270a4
20 Vigesimal 6c18b8
36 Base36 ckx44

Cryptographic Hash Functions

md5 684d6edb50e5fe7ebab74171e6f715f8
sha1 b5f459ef1d53b99e3d9e49415a2edd8431ff22fd
sha256 2c18a1c88e10ba0bdbe8897940e58be68b94661a572b8d18502ebb9297974ee6
sha512 d4a24a4fbd632a0f21b4bd1c092ee0c4db8537020382d9abf51ba292f20c5c8f651e415b4102055b806d1e79c8aadc32ffec02bf2de3e10223415bc3057ce034
ripemd-160 891076ac49c9d0dd8fd1d77a3845de32f36cd956

21131428 as geometric shapes

Circle

Radius = n
Diameter 42262856
Circumference 132772677.92932
Area 1.4028381420153E+15

Sphere

Radius = n
Volume 3.9525297591535E+22
Surface area 5.6113525680614E+15
Circumference 132772677.92932

Square

Length = n
Perimeter 84525712
Area 446537249319184
Diagonal 29884352.069911

Cube

Length = n
Surface area 2679223495915104
Volume 9.4359697333064E+21
Space diagonal 36600706.932484

Equilateral Triangle

Length = n
Perimeter 63394284
Area 1.9335630082322E+14
Altitude 18300353.466242

Triangular Pyramid

Length = n
Surface area 1.9335630082322E+14
Volume 1.112039697582E+21
Height 9961450.6899702