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

81888021 (number)

81888021 is an odd 8-digits composite number following 81888020 and preceding 81888022. In scientific notation, it is written as 8.1888021 × 10^7. The sum of its digits is 36. It has a total of 2 prime factors and 4 positive divisors. There are 53561664 positive integers (up to 81888021) that are relatively prime to 81888021.

Interesting facts

81888021 has 4 divisors, whose sum is 82060172
The reverse of 81888021 is 12088818
Previous prime number is 477

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9

Name

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

Notation

Scientific notation	8.1888021 × 10^7
Engineering notation	8.1888021 × 10^6

Prime Factorization of 81888021

Prime Factorization 477 × 171673

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81888021	Product of the distinct prime numbers

The prime factorization of 81888021 is 477 × 171673. Since it has a total of 2 prime factors.

Most popular turbo-numbers

4, 2, 19, 48, 521, 749, 1392, 6352, 54556, 88264, 830854, 772399, 9540229, 3834871, 86873845, 67580109, 593781167, 411039294, 1338407555, 4577070359

Basic calculations (n = 81888021)

Multiplication

n×y

n×2	163776042
n×3	245664063
n×4	327552084
n×5	409440105

Division

n÷y

n÷2	40944010.5
n÷3	27296007
n÷3	20472005.25
n÷5	16377604.2

Exponentiation

n^y

n²	6705647983296441
n³	5.4911224287479E+23
n⁴	4.4965714875888E+31
n⁵	3.6821534040367E+39

Nth Root

^y√n

²√n	9049.2000198913
³√n	434.25029804409
⁴√n	95.127283257177
⁵√n	38.251112884844

Divisors of 81888021

1, 477, 171673, 81888021

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81888020	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81888021 can be divided by 4 positive divisors. The sum of these divisors (counting 81888021) is 1, the average is 0.25.

Base conversion 81888021

Base	System	Value
2	Binary	100111000011000001100010101
3	Ternary	12201002100020200
4	Quaternary	10320120030111
5	Quinary	131430404041
6	Senary	12043051113
8	Octal	470301425
10	Decimal	81888021
12	Duodecimal	23510a99
16	Hexadecimal	4e18315
20	Vigesimal	15bg011
36	Base36	1cr579

Cryptographic Hash Functions

md5	ad2c923e01dd63e6c19dd664972638c9
sha1	07c3b3b817d313a476fc954070ea2bc41033e6d4
sha256	70af0f9c5f6448eda4700354e1ccf260a4225a908e8979be11ff77c44097c1b9
sha512	9a87dbbad27221be8f5ba8621d768ecf7b430e266f9d7236b6dc398b72f85b23d06e9acc3d464edd04277ea14193080ee171772f07aa6a6795b289d95840d650
ripemd-160	9aa590c75ecc742d9c070eb4966a5f338edad0d9

81888021 as geometric shapes

Circle

Radius = n

Diameter	163776042
Circumference	514517610.38121
Area	2.1066414441883E+16

Sphere

Radius = n

Volume	2.3001159842822E+24
Surface area	8.4265657767533E+16
Circumference	514517610.38121

Square

Length = n

Perimeter	327552084
Area	6705647983296441
Diagonal	115807149.89409

Cube

Length = n

Surface area	40233887899778646
Volume	5.4911224287479E+23
Space diagonal	141834212.90327

Equilateral Triangle

Length = n

Perimeter	245664063
Area	2.9036307511853E+15
Altitude	70917106.451634

Triangular Pyramid

Length = n

Surface area	2.9036307511853E+15
Volume	6.4713498428219E+22
Height	38602383.298031