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

20512981 (number)

20512981 is an odd 8-digits prime number following 20512980 and preceding 20512982. In scientific notation, it is written as 2.0512981 × 10^7. The sum of its digits is 28. It has a total of 1 prime factors and 2 positive divisors. There are 20512980 positive integers (up to 20512981) that are relatively prime to 20512981.

Interesting facts

20512981 has 2 divisors, whose sum is 20512982
The reverse of 20512981 is 18921502
Previous prime number is 1

Basic properties

Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1

Name

Name	twenty million five hundred twelve thousand nine hundred eighty-one

Notation

Scientific notation	2.0512981 × 10^7
Engineering notation	2.0512981 × 10^6

Prime Factorization of 20512981

Prime Factorization 20512981

Composite number

ω	Distinct Factors	1	Total number of distinct prime factors
Ω	Total Factors	1	Total number of prime factors
rad	Radical	20512981	Product of the distinct prime numbers

The prime factorization of 20512981 is 20512981. Since it has a total of 1 prime factors.

Most popular turbo-numbers

4, 6, 38, 78, 704, 404, 5040, 8541, 42924, 13660, 226215, 910145, 7982121, 5597903, 45319550, 91765912, 941666837, 808529548, 9964952598, 6831821204

Basic calculations (n = 20512981)

Multiplication

n×y

n×2	41025962
n×3	61538943
n×4	82051924
n×5	102564905

Division

n÷y

n÷2	10256490.5
n÷3	6837660.3333333
n÷3	5128245.25
n÷5	4102596.2

Exponentiation

n^y

n²	420782389506361
n³	8.6315011610786E+21
n⁴	1.7705781931868E+29
n⁵	3.6319836835856E+36

Nth Root

^y√n

²√n	4529.1258538486
³√n	273.74293915053
⁴√n	67.298780478168
⁵√n	29.000518021706

Divisors of 20512981

1, 20512981

2 divisors

τ	Total Divisors	2	Total number of the positive divisors of n
σ	Sum of Divisors	20512982	Sum of all the positive divisors of n
s	Aliquot Sum	1	Sum of the proper positive divisors of n
A	Arithmetic Mean	10256491	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	4529.1259642452	Returns the nth root of the product of n divisors
H	Harmonic Mean	1.9999999025008	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20512981 can be divided by 2 positive divisors. The sum of these divisors (counting 20512981) is 20512982, the average is 10256491.

Base conversion 20512981

Base	System	Value
2	Binary	1001110010000000011010101
3	Ternary	1102121011112001
4	Quaternary	1032100003111
5	Quinary	20222403411
6	Senary	2011355301
8	Octal	116200325
10	Decimal	20512981
12	Duodecimal	6a52b31
16	Hexadecimal	13900d5
20	Vigesimal	684291
36	Base36	c7nx1

Cryptographic Hash Functions

md5	2dfb2588727e20344753c98d8f183c1c
sha1	28804d72a9c31816d7617e2a91d9f919c6aa5d46
sha256	bf97658758f6e121afab716c8f47f397195d3b900679ea993dacddc74934e7c4
sha512	e4815ae6fb140bc68abb1d2d118a8b87c79cbfd485850861c693155fe18c59d28fd885598bd039f756b23c79a7b81dd135de39d19a9acf35e699eee800908528
ripemd-160	068ee1a53932dc31e0c0aa84da538b45140a56fe

20512981 as geometric shapes

Circle

Radius = n

Diameter	41025962
Circumference	128886860.82565
Area	1.3219268636331E+15

Sphere

Radius = n

Volume	3.6155547516128E+22
Surface area	5.2877074545326E+15
Circumference	128886860.82565

Square

Length = n

Perimeter	82051924
Area	420782389506361
Diagonal	29009735.934902

Cube

Length = n

Surface area	2524694337038166
Volume	8.6315011610786E+21
Space diagonal	35529525.306695

Equilateral Triangle

Length = n

Perimeter	61538943
Area	1.8220411938881E+14
Altitude	17764762.653348

Triangular Pyramid

Length = n

Surface area	1.8220411938881E+14
Volume	1.0172321671364E+21
Height	9669911.9783005