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

81293491 (number)

81293491 is an odd 8-digits composite number following 81293490 and preceding 81293492. In scientific notation, it is written as 8.1293491 × 10^7. The sum of its digits is 37. It has a total of 2 prime factors and 4 positive divisors. There are 80672800 positive integers (up to 81293491) that are relatively prime to 81293491.

Interesting facts

81293491 has 4 divisors, whose sum is 81914184
The reverse of 81293491 is 19439218
Previous prime number is 131

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1

Name

Name	eighty-one million two hundred ninety-three thousand four hundred ninety-one

Notation

Scientific notation	8.1293491 × 10^7
Engineering notation	8.1293491 × 10^6

Prime Factorization of 81293491

Prime Factorization 131 × 620561

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81293491	Product of the distinct prime numbers

The prime factorization of 81293491 is 131 × 620561. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 3, 95, 32, 760, 553, 7617, 2372, 3851, 28728, 610428, 833309, 8505753, 4715352, 84941637, 29409918, 128319148, 875319292, 6538397833, 6311521730

Basic calculations (n = 81293491)

Multiplication

n×y

n×2	162586982
n×3	243880473
n×4	325173964
n×5	406467455

Division

n÷y

n÷2	40646745.5
n÷3	27097830.333333
n÷3	20323372.75
n÷5	16258698.2

Exponentiation

n^y

n²	6608631678967081
n³	5.3723873991643E+23
n⁴	4.3674012668247E+31
n⁵	3.55041295578E+39

Nth Root

^y√n

²√n	9016.2903125399
³√n	433.19681807564
⁴√n	94.954148474618
⁵√n	38.195408114577

Divisors of 81293491

1, 131, 620561, 81293491

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	-81293490	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 81293491 can be divided by 4 positive divisors. The sum of these divisors (counting 81293491) is 1, the average is 0.25.

Base conversion 81293491

Base	System	Value
2	Binary	100110110000111000010110011
3	Ternary	12122222010201001
4	Quaternary	10312013002303
5	Quinary	131302342431
6	Senary	12022222431
8	Octal	466070263
10	Decimal	81293491
12	Duodecimal	23284a17
16	Hexadecimal	4d870b3
20	Vigesimal	1581deb
36	Base36	1ceegj

Cryptographic Hash Functions

md5	f9223fcc70d7e5dc5cec6a70ac651a88
sha1	4ee16c425a162992a64429e92d5c950d53e22fc1
sha256	c0d809675bc21487a7227ab89257ac6093762b65b5b1a122718cfea288fa0499
sha512	d626b7119431e2d408b3de461be72b81c72a1fd79a35adc966cfc679b4e5fac38486f4347fd950bd52debed342896d8287d3d60bd4d14bc386e144a602383caf
ripemd-160	cf3dd4863762e27234014d3941ab3d7a88f93cfe

81293491 as geometric shapes

Circle

Radius = n

Diameter	162586982
Circumference	510782068.22054
Area	2.0761628732924E+16

Sphere

Radius = n

Volume	2.2503803713937E+24
Surface area	8.3046514931695E+16
Circumference	510782068.22054

Square

Length = n

Perimeter	325173964
Area	6608631678967081
Diagonal	114966357.50486

Cube

Length = n

Surface area	39651790073802486
Volume	5.3723873991643E+23
Space diagonal	140804456.73664

Equilateral Triangle

Length = n

Perimeter	243880473
Area	2.86162145912E+15
Altitude	70402228.368322

Triangular Pyramid

Length = n

Surface area	2.86162145912E+15
Volume	6.331419268517E+22
Height	38322119.168285