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

81129739 (number)

81129739 is an odd 8-digits composite number following 81129738 and preceding 81129740. In scientific notation, it is written as 8.1129739 × 10^7. The sum of its digits is 40. It has a total of 2 prime factors and 4 positive divisors. There are 81094824 positive integers (up to 81129739) that are relatively prime to 81129739.

Interesting facts

81129739 has 4 divisors, whose sum is 81164656
The reverse of 81129739 is 93792118
Previous prime number is 2503

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 40
Digital Root 4

Name

Name	eighty-one million one hundred twenty-nine thousand seven hundred thirty-nine

Notation

Scientific notation	8.1129739 × 10^7
Engineering notation	8.1129739 × 10^6

Prime Factorization of 81129739

Prime Factorization 2503 × 32413

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81129739	Product of the distinct prime numbers

The prime factorization of 81129739 is 2503 × 32413. Since it has a total of 2 prime factors.

Most popular turbo-numbers

5, 3, 11, 30, 76, 772, 5364, 8363, 95663, 79647, 340103, 491419, 6600533, 6681495, 82568741, 6671535, 65947790, 596294009, 9867960474, 1787770502

Basic calculations (n = 81129739)

Multiplication

n×y

n×2	162259478
n×3	243389217
n×4	324518956
n×5	405648695

Division

n÷y

n÷2	40564869.5
n÷3	27043246.333333
n÷3	20282434.75
n÷5	16225947.8

Exponentiation

n^y

n²	6582034550208121
n³	5.3399874514737E+23
n⁴	4.3323178820133E+31
n⁵	3.5147981903278E+39

Nth Root

^y√n

²√n	9007.2048383502
³√n	432.90575529415
⁴√n	94.906295040689
⁵√n	38.180008062235

Divisors of 81129739

1, 2503, 32413, 81129739

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	-81129738	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 81129739 can be divided by 4 positive divisors. The sum of these divisors (counting 81129739) is 1, the average is 0.25.

Base conversion 81129739

Base	System	Value
2	Binary	100110101011111000100001011
3	Ternary	12122122211002011
4	Quaternary	10311133010023
5	Quinary	131232122424
6	Senary	12014520351
8	Octal	465370413
10	Decimal	81129739
12	Duodecimal	232060b7
16	Hexadecimal	4d5f10b
20	Vigesimal	157146j
36	Base36	1caw3v

Cryptographic Hash Functions

md5	fe8a392c52d9b39b8be76b09493939c9
sha1	16659cf671763bf2a61277f4ec60727d448f6273
sha256	a19269bfc14638d1b37e1a584e253c4307ba539d62843593c0561843418d88f8
sha512	51c044d6d41fd6b44d817a3c6770ca53b1035d36fb1356c7cdeb2b658a5f985dfcbf1f10d00a32d67bb5e184ad7e3f55150ae08557aa8ad7ac191eb7592f0419
ripemd-160	ce5e6019966dfeaada5b15023c9b085cb3dd1e22

81129739 as geometric shapes

Circle

Radius = n

Diameter	162259478
Circumference	509753184.06011
Area	2.0678071388608E+16

Sphere

Radius = n

Volume	2.2368087130415E+24
Surface area	8.2712285554432E+16
Circumference	509753184.06011

Square

Length = n

Perimeter	324518956
Area	6582034550208121
Diagonal	114734777.20559

Cube

Length = n

Surface area	39492207301248726
Volume	5.3399874514737E+23
Space diagonal	140520829.9528

Equilateral Triangle

Length = n

Perimeter	243389217
Area	2.8501045645336E+15
Altitude	70260414.976401

Triangular Pyramid

Length = n

Surface area	2.8501045645336E+15
Volume	6.2932355639802E+22
Height	38244925.735196