21087940 (number)

21087940 is an even 8-digits composite number following 21087939 and preceding 21087941. In scientific notation, it is written as 2.1087940 × 10^7. The sum of its digits is 31. It has a total of 5 prime factors and 24 positive divisors. There are 8229120 positive integers (up to 21087940) that are relatively prime to 21087940.

Interesting facts

Basic properties

Name

Name twenty-one million eighty-seven thousand nine hundred forty

Notation

Scientific notation 2.1087940 × 10^7
Engineering notation 2.1087940 × 10^6

Prime Factorization of 21087940

Prime Factorization 2 × 2 × 5 × 41 × 25717

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 10543970
Product of the distinct prime numbers

The prime factorization of 21087940 is 2 × 2 × 5 × 41 × 25717. Since it has a total of 5 prime factors.

Most popular turbo-numbers

7, 9, 49, 87, 42, 248, 9695, 8826, 40493, 35657, 941103, 548235, 6601055, 1651511, 83296875, 10523924, 991406800, 641368845, 3820004094, 1107988552

Basic calculations (n = 21087940)

Multiplication

n×y
n×2 42175880
n×3 63263820
n×4 84351760
n×5 105439700

Division

n÷y
n÷2 10543970
n÷3 7029313.3333333
n÷3 5271985
n÷5 4217588

Exponentiation

ny
n2 444701213443600
n3 9.3778325070258E+21
n4 1.9775916923821E+29
n5 4.1703334953452E+36

Nth Root

y√n
2√n 4592.1607114734
3√n 276.27699210057
4√n 67.765483186305
5√n 29.161296688638

Divisors of 21087940

1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 25717, 51434, 102868, 128585, 257170, 514340, 1054397, 2108794, 4217588, 5271985, 10543970, 21087940

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 -21087939
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 21087940 can be divided by 24 positive divisors. The sum of these divisors (counting 21087940) is 1, the average is 0.041666666666667.

Base conversion 21087940

Base System Value
2 Binary 1010000011100011011000100
3 Ternary 1110200101012211
4 Quaternary 1100130123010
5 Quinary 20344303230
6 Senary 2031553204
8 Octal 120343304
10 Decimal 21087940
12 Duodecimal 708b804
16 Hexadecimal 141c6c4
20 Vigesimal 6bfjh0
36 Base36 cjzk4

Cryptographic Hash Functions

md5 0ae0e9eea3f351f2963b144d22cb5029
sha1 514fe74b1a94a33a6259e3c0280b7fdd583979d4
sha256 90fe824f0ead4f4fe0d4c58d274bb33e7ecebdb0d075b2e520c0479615593888
sha512 e0442dbcebd0ed7a0ecd2d0a93996c1cb7bf5a2f650682f172f91c4f34b342b6984fbbb778296be8dd1a050f40054fd1d7c28ef367a87d68871392a3fc1ee1a5
ripemd-160 7675c9e67e6813077b35f11a850ebef38c0b8224

21087940 as geometric shapes

Circle

Radius = n
Diameter 42175880
Circumference 132499434.76668
Area 1.3970700651969E+15

Sphere

Radius = n
Volume 3.9281772947557E+22
Surface area 5.5882802607875E+15
Circumference 132499434.76668

Square

Length = n
Perimeter 84351760
Area 444701213443600
Diagonal 29822850.75051

Cube

Length = n
Surface area 2668207280661600
Volume 9.3778325070258E+21
Space diagonal 36525383.506964

Equilateral Triangle

Length = n
Perimeter 63263820
Area 1.9256127396796E+14
Altitude 18262691.753482

Triangular Pyramid

Length = n
Surface area 1.9256127396796E+14
Volume 1.1051881597583E+21
Height 9940950.25017