21087972 (number)

21087972 is an even 8-digits composite number following 21087971 and preceding 21087973. In scientific notation, it is written as 2.1087972 × 10^7. The sum of its digits is 36. It has a total of 5 prime factors and 24 positive divisors. There are 7029288 positive integers (up to 21087972) that are relatively prime to 21087972.

Interesting facts

Basic properties

Name

Name twenty-one million eighty-seven thousand nine hundred seventy-two

Notation

Scientific notation 2.1087972 × 10^7
Engineering notation 2.1087972 × 10^6

Prime Factorization of 21087972

Prime Factorization 2 × 2 × 3 × 9 × 195259

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 10543986
Product of the distinct prime numbers

The prime factorization of 21087972 is 2 × 2 × 3 × 9 × 195259. Since it has a total of 5 prime factors.

Most popular turbo-numbers

9, 10, 70, 78, 920, 721, 9254, 9509, 593, 51617, 818678, 339462, 2480848, 1675908, 92696356, 36301709, 375459538, 489195958, 8799431658, 8818899112

Basic calculations (n = 21087972)

Multiplication

n×y
n×2 42175944
n×3 63263916
n×4 84351888
n×5 105439860

Division

n÷y
n÷2 10543986
n÷3 7029324
n÷3 5271993
n÷5 4217594.4

Exponentiation

ny
n2 444702563072784
n3 9.3778751984071E+21
n4 1.977603696035E+29
n5 4.1703651369083E+36

Nth Root

y√n
2√n 4592.1641956707
3√n 276.27713184647
4√n 67.765508894058
5√n 29.161305538823

Divisors of 21087972

1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 195259, 390518, 585777, 781036, 1171554, 1757331, 2343108, 3514662, 5271993, 7029324, 10543986, 21087972

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 -21087971
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 21087972 can be divided by 24 positive divisors. The sum of these divisors (counting 21087972) is 1, the average is 0.041666666666667.

Base conversion 21087972

Base System Value
2 Binary 1010000011100011011100100
3 Ternary 1110200101021000
4 Quaternary 1100130123210
5 Quinary 20344303342
6 Senary 2031553300
8 Octal 120343344
10 Decimal 21087972
12 Duodecimal 708b830
16 Hexadecimal 141c6e4
20 Vigesimal 6bfjic
36 Base36 cjzl0

Cryptographic Hash Functions

md5 0c0af6aa77c004e0f76c7d4dfca918b9
sha1 4d07ada1149f939752633bb32bd572cb0d3f343f
sha256 cf42a47ca8d97f74deacac55c2aaebfa0167b8855da9255a01d1fbaf58071f43
sha512 1275a40f80a4d1bc082879aa07b4ce4710ec0ac7705cd5adccc97e09e2c7d0daca10dfa7da8315371e0011a5e751cc20a3d1e95d888a24fcb920c8fb0ebb9d35
ripemd-160 dabe270bdd820cf6a38f6fed9e80bbe8f415488f

21087972 as geometric shapes

Circle

Radius = n
Diameter 42175944
Circumference 132499635.82861
Area 1.397074305182E+15

Sphere

Radius = n
Volume 3.9281951772797E+22
Surface area 5.588297220728E+15
Circumference 132499635.82861

Square

Length = n
Perimeter 84351888
Area 444702563072784
Diagonal 29822896.005344

Cube

Length = n
Surface area 2668215378436704
Volume 9.3778751984071E+21
Space diagonal 36525438.93259

Equilateral Triangle

Length = n
Perimeter 63263916
Area 1.9256185837454E+14
Altitude 18262719.466295

Triangular Pyramid

Length = n
Surface area 1.9256185837454E+14
Volume 1.1051931909858E+21
Height 9940965.3351147