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

81291268 (number)

81291268 is an even 8-digits composite number following 81291267 and preceding 81291269. In scientific notation, it is written as 8.1291268 × 10^7. The sum of its digits is 37. It has a total of 3 prime factors and 6 positive divisors. There are 40645632 positive integers (up to 81291268) that are relatively prime to 81291268.

Interesting facts

81291268 has 6 divisors, whose sum is 142259726
The reverse of 81291268 is 86219218
Previous prime number is 2

Basic properties

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

Name

Name	eighty-one million two hundred ninety-one thousand two hundred sixty-eight

Notation

Scientific notation	8.1291268 × 10^7
Engineering notation	8.1291268 × 10^6

Prime Factorization of 81291268

Prime Factorization 2 × 2 × 20322817

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	40645634	Product of the distinct prime numbers

The prime factorization of 81291268 is 2 × 2 × 20322817. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 9, 31, 70, 450, 124, 8328, 6522, 6376, 66872, 756556, 808551, 1761582, 785519, 85757228, 56791481, 48876969, 305142262, 5345924898, 6618391697

Basic calculations (n = 81291268)

Multiplication

n×y

n×2	162582536
n×3	243873804
n×4	325165072
n×5	406456340

Division

n÷y

n÷2	40645634
n÷3	27097089.333333
n÷3	20322817
n÷5	16258253.6

Exponentiation

n^y

n²	6608270253047824
n³	5.3719466815694E+23
n⁴	4.3669235737317E+31
n⁵	3.5499275456774E+39

Nth Root

^y√n

²√n	9016.1670348325
³√n	433.19286939827
⁴√n	94.953499329053
⁵√n	38.195199218834

Divisors of 81291268

1, 2, 4, 20322817, 40645634, 81291268

6 divisors

τ	Total Divisors	6	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81291267	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.16666666666667	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	6	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81291268 can be divided by 6 positive divisors. The sum of these divisors (counting 81291268) is 1, the average is 0.16666666666667.

Base conversion 81291268

Base	System	Value
2	Binary	100110110000110100000000100
3	Ternary	12122222000122201
4	Quaternary	10312012200010
5	Quinary	131302310033
6	Senary	12022204244
8	Octal	466064004
10	Decimal	81291268
12	Duodecimal	23283684
16	Hexadecimal	4d86804
20	Vigesimal	1581838
36	Base36	1cecqs

Cryptographic Hash Functions

md5	8857ef99ec802729debb2d4499b728d6
sha1	4b45cf715b983a5be32f3e0dcba68fedb6be348e
sha256	e9c5f2f57523aadb30746326f70c7ba45f6d97fbb31913be615f671c4de07486
sha512	e9921f1ff23ea24c6335633531278935221683f6e9ef6f3ce59ff198321da5b5e481f9a098092f696b38c042cfc72d3a0e2bde58c132aae7921dbf9da5f87061
ripemd-160	bfe6fc0948638eaff59ec761bc6fae0fd7e82898

81291268 as geometric shapes

Circle

Radius = n

Diameter	162582536
Circumference	510768100.6996
Area	2.0760493279911E+16

Sphere

Radius = n

Volume	2.2501957640393E+24
Surface area	8.3041973119644E+16
Circumference	510768100.6996

Square

Length = n

Perimeter	325165072
Area	6608270253047824
Diagonal	114963213.70811

Cube

Length = n

Surface area	39649621518286944
Volume	5.3719466815694E+23
Space diagonal	140800606.3877

Equilateral Triangle

Length = n

Perimeter	243873804
Area	2.8614649571062E+15
Altitude	70400303.193849

Triangular Pyramid

Length = n

Surface area	2.8614649571062E+15
Volume	6.3308998778505E+22
Height	38321071.236035