81265849 (number)

81265849 is an odd 8-digits composite number following 81265848 and preceding 81265850. In scientific notation, it is written as 8.1265849 × 10^7. The sum of its digits is 43. It has a total of 4 prime factors and 16 positive divisors. There are 67032000 positive integers (up to 81265849) that are relatively prime to 81265849.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred sixty-five thousand eight hundred forty-nine

Notation

Scientific notation 8.1265849 × 10^7
Engineering notation 8.1265849 × 10^6

Prime Factorization of 81265849

Prime Factorization 7 × 31 × 197 × 1901

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81265849
Product of the distinct prime numbers

The prime factorization of 81265849 is 7 × 31 × 197 × 1901. Since it has a total of 4 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81265849)

Multiplication

n×y
n×2 162531698
n×3 243797547
n×4 325063396
n×5 406329245

Division

n÷y
n÷2 40632924.5
n÷3 27088616.333333
n÷3 20316462.25
n÷5 16253169.8

Exponentiation

ny
n2 6604138213690801
n3 5.3669089884893E+23
n4 4.3614641545531E+31
n5 3.5443808740283E+39

Nth Root

y√n
2√n 9014.7572901327
3√n 433.14771293916
4√n 94.946075696327
5√n 38.192810265506

Divisors of 81265849

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81265848
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81265849 can be divided by 16 positive divisors. The sum of these divisors (counting 81265849) is 1, the average is 0.0625.

Base conversion 81265849

Base System Value
2 Binary 100110110000000010010111001
3 Ternary 12122220201210021
4 Quaternary 10312000102321
5 Quinary 131301001344
6 Senary 12021450441
8 Octal 466002271
10 Decimal 81265849
12 Duodecimal 23270a21
16 Hexadecimal 4d804b9
20 Vigesimal 157i4c9
36 Base36 1cdt4p

Cryptographic Hash Functions

md5 7c88d310a7dae8c260ac693a59897023
sha1 84ea38b3b05c87133a5da38038db403ca283eab4
sha256 11acb0b38dc1a7e58ea8b6c90e7df4d700245c3492e461f40a3d81b95f1006a6
sha512 a99f1dd769179bd2744304ff48a73700bbe62dcb4303502a4b703f5da405f740dd7dda525fac9246b7dde54b9f3f1f6d1e884de75e2f237fa8d94ea6a5ede3eb
ripemd-160 d373dc48ea2b20038a64bee0a5a04dd14dda409a

81265849 as geometric shapes

Circle

Radius = n
Diameter 162531698
Circumference 510608388.41227
Area 2.0747512095423E+16

Sphere

Radius = n
Volume 2.2480855800964E+24
Surface area 8.2990048381691E+16
Circumference 510608388.41227

Square

Length = n
Perimeter 325063396
Area 6604138213690801
Diagonal 114927265.81356

Cube

Length = n
Surface area 39624829282144806
Volume 5.3669089884893E+23
Space diagonal 140756579.38822

Equilateral Triangle

Length = n
Perimeter 243797547
Area 2.8596757315799E+15
Altitude 70378289.69411

Triangular Pyramid

Length = n
Surface area 2.8596757315799E+15
Volume 6.3249628996197E+22
Height 38309088.604521