Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

20809987 (number)

20809987 is an odd 8-digits composite number following 20809986 and preceding 20809988. In scientific notation, it is written as 2.0809987 × 10^7. The sum of its digits is 43. It has a total of 3 prime factors and 8 positive divisors. There are 18873000 positive integers (up to 20809987) that are relatively prime to 20809987.

Interesting facts

20809987 has 8 divisors, whose sum is 22756032
The reverse of 20809987 is 78990802
Previous prime number is 11

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 43
Digital Root 7

Name

Name	twenty million eight hundred nine thousand nine hundred eighty-seven

Notation

Scientific notation	2.0809987 × 10^7
Engineering notation	2.0809987 × 10^6

Prime Factorization of 20809987

Prime Factorization 467 × 11 × 4051

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	20809987	Product of the distinct prime numbers

The prime factorization of 20809987 is 467 × 11 × 4051. Since it has a total of 3 prime factors.

Most popular turbo-numbers

5, 8, 70, 30, 431, 320, 5812, 5401, 40194, 10786, 720120, 451274, 4099150, 8120331, 64351545, 24905499, 538954426, 344800132, 3128179266, 9596810563

Basic calculations (n = 20809987)

Multiplication

n×y

n×2	41619974
n×3	62429961
n×4	83239948
n×5	104049935

Division

n÷y

n÷2	10404993.5
n÷3	6936662.3333333
n÷3	5202496.75
n÷5	4161997.4

Exponentiation

n^y

n²	433055558940169
n³	9.0118805518227E+21
n⁴	1.8753711712898E+29
n⁵	3.9026449694716E+36

Nth Root

^y√n

²√n	4561.7964663058
³√n	275.05778179768
⁴√n	67.541072439707
⁵√n	29.084015122119

Divisors of 20809987

1, 11, 467, 4051, 5137, 44561, 1891817, 20809987

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-20809986	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	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	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20809987 can be divided by 8 positive divisors. The sum of these divisors (counting 20809987) is 1, the average is 0.125.

Base conversion 20809987

Base	System	Value
2	Binary	1001111011000100100000011
3	Ternary	1110011020221021
4	Quaternary	1033120210003
5	Quinary	20311404422
6	Senary	2022010311
8	Octal	117304403
10	Decimal	20809987
12	Duodecimal	6b76997
16	Hexadecimal	13d8903
20	Vigesimal	6a14j7
36	Base36	ce137

Cryptographic Hash Functions

md5	b4002a5c90c5650a94fe01333a077d17
sha1	21424ddbada54bcaa4794d9a07af4947f82dccb4
sha256	d9805338fd8b5dbf18c9a60556086050065df56934d115399d1268471058ef12
sha512	13458ebba0ce3ed7265b660979c398db8775934b1b4ce17cf4699aaf95c4f9d4009bd8f9ea0bbb2659301b72d1d411fdcfec8294ad4ec3d80cb638f2dd332499
ripemd-160	565bff33656641f4544bbb1cb46f65d2030a8198

20809987 as geometric shapes

Circle

Radius = n

Diameter	41619974
Circumference	130753004.561
Area	1.3604841625627E+15

Sphere

Radius = n

Volume	3.774887698218E+22
Surface area	5.4419366502506E+15
Circumference	130753004.561

Square

Length = n

Perimeter	83239948
Area	433055558940169
Diagonal	29429765.848208

Cube

Length = n

Surface area	2598333353641014
Volume	9.0118805518227E+21
Space diagonal	36043954.788848

Equilateral Triangle

Length = n

Perimeter	62429961
Area	1.8751855764613E+14
Altitude	18021977.394424

Triangular Pyramid

Length = n

Surface area	1.8751855764613E+14
Volume	1.0620603082395E+21
Height	9809921.9494026