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

81121018 (number)

81121018 is an even 8-digits composite number following 81121017 and preceding 81121019. In scientific notation, it is written as 8.1121018 × 10^7. The sum of its digits is 22. It has a total of 3 prime factors and 8 positive divisors. There are 36873180 positive integers (up to 81121018) that are relatively prime to 81121018.

Interesting facts

81121018 has 8 divisors, whose sum is 132743520
The reverse of 81121018 is 81012118
Previous prime number is 11

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 22
Digital Root 4

Name

Name	eighty-one million one hundred twenty-one thousand eighteen

Notation

Scientific notation	8.1121018 × 10^7
Engineering notation	8.1121018 × 10^6

Prime Factorization of 81121018

Prime Factorization 2 × 11 × 3687319

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81121018	Product of the distinct prime numbers

The prime factorization of 81121018 is 2 × 11 × 3687319. Since it has a total of 3 prime factors.

Most popular turbo-numbers

3, 5, 26, 20, 586, 747, 7974, 5666, 76595, 55718, 669910, 244913, 3830797, 1008751, 48026725, 77087528, 263275998, 123501413, 5055771394, 7769909695

Basic calculations (n = 81121018)

Multiplication

n×y

n×2	162242036
n×3	243363054
n×4	324484072
n×5	405605090

Division

n÷y

n÷2	40560509
n÷3	27040339.333333
n÷3	20280254.5
n÷5	16224203.6

Exponentiation

n^y

n²	6580619561356324
n³	5.3382655788794E+23
n⁴	4.3304553811305E+31
n⁵	3.5129094892089E+39

Nth Root

^y√n

²√n	9006.7207128899
³√n	432.89024307704
⁴√n	94.903744461902
⁵√n	38.179187198832

Divisors of 81121018

1, 2, 11, 22, 3687319, 7374638, 40560509, 81121018

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	-81121017	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 81121018 can be divided by 8 positive divisors. The sum of these divisors (counting 81121018) is 1, the average is 0.125.

Base conversion 81121018

Base	System	Value
2	Binary	100110101011100111011111010
3	Ternary	12122122101010011
4	Quaternary	10311130323322
5	Quinary	131231333033
6	Senary	12014412134
8	Octal	465347372
10	Decimal	81121018
12	Duodecimal	2320104a
16	Hexadecimal	4d5cefa
20	Vigesimal	15702ai
36	Base36	1capdm

Cryptographic Hash Functions

md5	8fde1a4fb4826599484e5478e19789f4
sha1	71c7f93a1fb224f9066950e20203cc0de438d513
sha256	a39f84de81c7ab1bf6a1885e630d8626047902168a12b7549bdc038f6d153264
sha512	8a93e6ae8eb39ee4e301ff19d51a11d1109747d553036192bd678c7b3e3dabe0a5bf7586afb65678c75eb7ef55c2f24426071ad987071ecf2ae5230bbaf860fb
ripemd-160	23d46281e4071355884de7eb5f1c467bae76f15c

81121018 as geometric shapes

Circle

Radius = n

Diameter	162242036
Circumference	509698388.40105
Area	2.0673626070026E+16

Sphere

Radius = n

Volume	2.2360874567358E+24
Surface area	8.2694504280105E+16
Circumference	509698388.40105

Square

Length = n

Perimeter	324484072
Area	6580619561356324
Diagonal	114722443.84911

Cube

Length = n

Surface area	39483717368137944
Volume	5.3382655788794E+23
Space diagonal	140505724.73771

Equilateral Triangle

Length = n

Perimeter	243363054
Area	2.8494918563877E+15
Altitude	70252862.368855

Triangular Pyramid

Length = n

Surface area	2.8494918563877E+15
Volume	6.2912063176672E+22
Height	38240814.616371