81661594 (number)

81661594 is an even 8-digits composite number following 81661593 and preceding 81661595. In scientific notation, it is written as 8.1661594 × 10^7. The sum of its digits is 40. It has a total of 4 prime factors and 16 positive divisors. There are 34604064 positive integers (up to 81661594) that are relatively prime to 81661594.

Interesting facts

Basic properties

Name

Name eighty-one million six hundred sixty-one thousand five hundred ninety-four

Notation

Scientific notation 8.1661594 × 10^7
Engineering notation 8.1661594 × 10^6

Prime Factorization of 81661594

Prime Factorization 2 × 7 × 89 × 65539

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81661594
Product of the distinct prime numbers

The prime factorization of 81661594 is 2 × 7 × 89 × 65539. Since it has a total of 4 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81661594)

Multiplication

n×y
n×2 163323188
n×3 244984782
n×4 326646376
n×5 408307970

Division

n÷y
n÷2 40830797
n÷3 27220531.333333
n÷3 20415398.5
n÷5 16332318.8

Exponentiation

ny
n2 6668615934620836
n3 5.4456980699494E+23
n4 4.4470438483479E+31
n5 3.6315268924398E+39

Nth Root

y√n
2√n 9036.6804745991
3√n 433.84968284239
4√n 95.061456303799
5√n 38.229935965449

Divisors of 81661594

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 -81661593
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 81661594 can be divided by 16 positive divisors. The sum of these divisors (counting 81661594) is 1, the average is 0.0625.

Base conversion 81661594

Base System Value
2 Binary 100110111100000111010011010
3 Ternary 12200122211122111
4 Quaternary 10313200322122
5 Quinary 131401132334
6 Senary 12034142534
8 Octal 467407232
10 Decimal 81661594
12 Duodecimal 23421a4a
16 Hexadecimal 4de0e9a
20 Vigesimal 15a7dje
36 Base36 1cmahm

Cryptographic Hash Functions

md5 a91a2a02f09c4093f6c63e2e548fd3d0
sha1 1acbc5dde69aad240a1745ee7b384c93607a885f
sha256 883e6f09118f19aee23e7bb8021faaaade006118a0c8d6e445d04ababc999ff8
sha512 80458a9393b02891296ef5fcd53adc745f97b26c63c84723819e175bc19faca9ebd017391f4346502c723b0466430028177aa6032c96f038a00afe954582bac6
ripemd-160 6792426a6c23f267c2bab972687976bb889141d1

81661594 as geometric shapes

Circle

Radius = n
Diameter 163323188
Circumference 513094927.58166
Area 2.0950074829817E+16

Sphere

Radius = n
Volume 2.2810886733628E+24
Surface area 8.3800299319267E+16
Circumference 513094927.58166

Square

Length = n
Perimeter 326646376
Area 6668615934620836
Diagonal 115486933.75981

Cube

Length = n
Surface area 40011695607725016
Volume 5.4456980699494E+23
Space diagonal 141442029.83506

Equilateral Triangle

Length = n
Perimeter 244984782
Area 2.8875954037317E+15
Altitude 70721014.917531

Triangular Pyramid

Length = n
Surface area 2.8875954037317E+15
Volume 6.4178167225928E+22
Height 38495644.586602