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

81138013 (number)

81138013 is an odd 8-digits composite number following 81138012 and preceding 81138014. In scientific notation, it is written as 8.1138013 × 10^7. The sum of its digits is 25. It has a total of 3 prime factors and 8 positive divisors. There are 73674480 positive integers (up to 81138013) that are relatively prime to 81138013.

Interesting facts

81138013 has 8 divisors, whose sum is 88619040
The reverse of 81138013 is 31083118
Previous prime number is 7789

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7

Name

Name	eighty-one million one hundred thirty-eight thousand thirteen

Notation

Scientific notation	8.1138013 × 10^7
Engineering notation	8.1138013 × 10^6

Prime Factorization of 81138013

Prime Factorization 11 × 7789 × 947

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81138013	Product of the distinct prime numbers

The prime factorization of 81138013 is 11 × 7789 × 947. Since it has a total of 3 prime factors.

Most popular turbo-numbers

10, 7, 13, 33, 338, 430, 6928, 284, 23457, 19017, 582078, 486242, 5883070, 437961, 45640505, 72576296, 189194021, 101875681, 1831719218, 6243803210

Basic calculations (n = 81138013)

Multiplication

n×y

n×2	162276026
n×3	243414039
n×4	324552052
n×5	405690065

Division

n÷y

n÷2	40569006.5
n÷3	27046004.333333
n÷3	20284503.25
n÷5	16227602.6

Exponentiation

n^y

n²	6583377153588169
n³	5.3416214107174E+23
n⁴	4.3340854746387E+31
n⁵	3.5165908358434E+39

Nth Root

^y√n

²√n	9007.664125621
³√n	432.92047139581
⁴√n	94.908714697972
⁵√n	38.180786786546

Divisors of 81138013

1, 11, 947, 7789, 10417, 85679, 7376183, 81138013

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	-81138012	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 81138013 can be divided by 8 positive divisors. The sum of these divisors (counting 81138013) is 1, the average is 0.125.

Base conversion 81138013

Base	System	Value
2	Binary	100110101100001000101011101
3	Ternary	12122200020102121
4	Quaternary	10311201011131
5	Quinary	131232404023
6	Senary	12015022541
8	Octal	465410535
10	Decimal	81138013
12	Duodecimal	2320aa51
16	Hexadecimal	4d6115d
20	Vigesimal	157250d
36	Base36	1cb2hp

Cryptographic Hash Functions

md5	446ddfa66cbdf2e20759769a1cffa125
sha1	5d55d091867749cc48448a12ce87b37a6e04a93c
sha256	bb1a02d92da4156930ec0d1d9a3ed6e6d93a60d8d3db07ddb7255e3d6f3c9050
sha512	ad551d5d72904bd45b3de00e623cb2c608b1979c8c98212134c04297d7b98ff583a567f49187520903c5cf1ccdb6a4b4966ae2c0dea428fa0301e592c267b82f
ripemd-160	5688d1f97197fee5dbf9db2f518bad5237941f1d

81138013 as geometric shapes

Circle

Radius = n

Diameter	162276026
Circumference	509805171.13535
Area	2.0682289301523E+16

Sphere

Radius = n

Volume	2.237493144289E+24
Surface area	8.2729157206094E+16
Circumference	509805171.13535

Square

Length = n

Perimeter	324552052
Area	6583377153588169
Diagonal	114746478.4086

Cube

Length = n

Surface area	39500262921529014
Volume	5.3416214107174E+23
Space diagonal	140535160.94118

Equilateral Triangle

Length = n

Perimeter	243414039
Area	2.8506859288507E+15
Altitude	70267580.470592

Triangular Pyramid

Length = n

Surface area	2.8506859288507E+15
Volume	6.2951612034159E+22
Height	38248826.136202