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

81276721 (number)

81276721 is an odd 8-digits composite number following 81276720 and preceding 81276722. In scientific notation, it is written as 8.1276721 × 10^7. The sum of its digits is 34. It has a total of 2 prime factors and 4 positive divisors. There are 80987200 positive integers (up to 81276721) that are relatively prime to 81276721.

Interesting facts

81276721 has 4 divisors, whose sum is 81566244
The reverse of 81276721 is 12767218
Previous prime number is 281

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7

Name

Name	eighty-one million two hundred seventy-six thousand seven hundred twenty-one

Notation

Scientific notation	8.1276721 × 10^7
Engineering notation	8.1276721 × 10^6

Prime Factorization of 81276721

Prime Factorization 281 × 289241

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81276721	Product of the distinct prime numbers

The prime factorization of 81276721 is 281 × 289241. Since it has a total of 2 prime factors.

Most popular turbo-numbers

2, 1, 79, 59, 97, 777, 7599, 1839, 4275, 52226, 505974, 372219, 2690066, 69317, 28097116, 50116206, 326945992, 644239122, 8391224630, 2699584683

Basic calculations (n = 81276721)

Multiplication

n×y

n×2	162553442
n×3	243830163
n×4	325106884
n×5	406383605

Division

n÷y

n÷2	40638360.5
n÷3	27092240.333333
n÷3	20319180.25
n÷5	16255344.2

Exponentiation

n^y

n²	6605905376511841
n³	5.3690632823915E+23
n⁴	4.3637985843428E+31
n⁵	3.5467524003983E+39

Nth Root

^y√n

²√n	9015.360281209
³√n	433.16702803074
⁴√n	94.949251082928
⁵√n	38.193832121598

Divisors of 81276721

1, 281, 289241, 81276721

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	-81276720	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 81276721 can be divided by 4 positive divisors. The sum of these divisors (counting 81276721) is 1, the average is 0.25.

Base conversion 81276721

Base	System	Value
2	Binary	100110110000010111100110001
3	Ternary	12122221021200221
4	Quaternary	10312002330301
5	Quinary	131301323341
6	Senary	12022013041
8	Octal	466027461
10	Decimal	81276721
12	Duodecimal	23277181
16	Hexadecimal	4d82f31
20	Vigesimal	157jbg1
36	Base36	1ce1ip

Cryptographic Hash Functions

md5	8b3d9b3c6f0ddfdd4db33509b1df7873
sha1	b58836b8a6c22d83df10e6b589b2647d54a3ca00
sha256	808c4d57f31621a41838c56b307c1f61d706828691a29544c45b32875265abfd
sha512	6d001813794cd0a9a573015b5f42376cbd72d03be5f8d49efa6a8f6930b77b6909e088cb2f4dbee8669f7162481fc754afa0f68454582f0ef158d058c9aeab24
ripemd-160	7fde381b5b5f281ef021be07af66dd60f7442166

81276721 as geometric shapes

Circle

Radius = n

Diameter	162553442
Circumference	510676699.20293
Area	2.0753063801159E+16

Sphere

Radius = n

Volume	2.248987968616E+24
Surface area	8.3012255204636E+16
Circumference	510676699.20293

Square

Length = n

Perimeter	325106884
Area	6605905376511841
Diagonal	114942641.14341

Cube

Length = n

Surface area	39635432259071046
Volume	5.3690632823915E+23
Space diagonal	140775410.2446

Equilateral Triangle

Length = n

Perimeter	243830163
Area	2.8604409355277E+15
Altitude	70387705.1223

Triangular Pyramid

Length = n

Surface area	2.8604409355277E+15
Volume	6.3275017593313E+22
Height	38314213.714471