81750 (number)

81750 is an even 5-digits composite number following 81749 and preceding 81751. In scientific notation, it is written as 8.1750 × 10^4. The sum of its digits is 21. It has a total of 4 prime factors and 16 positive divisors. There are 21600 positive integers (up to 81750) that are relatively prime to 81750.

Interesting facts

Basic properties

Name

Name eighty-one thousand seven hundred fifty

Notation

Scientific notation 8.1750 × 10^4
Engineering notation 8.1750 × 10^3

Prime Factorization of 81750

Prime Factorization 2 × 75 × 5 × 109

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81750
Product of the distinct prime numbers

The prime factorization of 81750 is 2 × 75 × 5 × 109. Since it has a total of 4 prime factors.

Most popular turbo-numbers

9, 5, 44, 22, 937, 982, 5699, 113, 75317, 94749, 405477, 221474, 2373605, 9475493, 79417398, 65079181, 725227875, 664429078, 5833443375, 3336727089

Basic calculations (n = 81750)

Multiplication

n×y
n×2 163500
n×3 245250
n×4 327000
n×5 408750

Division

n÷y
n÷2 40875
n÷3 27250
n÷3 20437.5
n÷5 16350

Exponentiation

ny
n2 6683062500
n3 546340359375000
n4 4.4663324378906E+19
n5 3.6512267679756E+24

Nth Root

y√n
2√n 285.91956910992
3√n 43.400618677781
4√n 16.909156368959
5√n 9.6050040488098

Divisors of 81750

1, 2, 5, 10, 75, 109, 150, 218, 375, 545, 750, 1090, 8175, 16350, 40875, 81750

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 -81749
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 81750 can be divided by 16 positive divisors. The sum of these divisors (counting 81750) is 1, the average is 0.0625.

Base conversion 81750

Base System Value
2 Binary 10011111101010110
3 Ternary 11011010210
4 Quaternary 103331112
5 Quinary 10104000
6 Senary 1430250
8 Octal 237526
10 Decimal 81750
12 Duodecimal 3b386
16 Hexadecimal 13f56
20 Vigesimal a47a
36 Base36 1r2u

Cryptographic Hash Functions

md5 3cedf820aad09dd5fe2e37df856bb43a
sha1 b1c5cdac48161e981db25d8e28dc36ff8820432a
sha256 acb930db45073b2a9deb5c7c3c68340cc4ef7b62a059a4c6844049be85d76fa0
sha512 ef849bf57930373838909acb17ff3df06a823e4a349df66676ea0c10006a072f978adf6a46cb4b5455c774ce522d1d16e3a36ff78f881432dbb57bb778c08b63
ripemd-160 a728da69fe4dd37f83d591f685beef7c3dfb19df

81750 as geometric shapes

Circle

Radius = n
Diameter 163500
Circumference 513650.39886193
Area 20995460053.481

Sphere

Radius = n
Volume 2.2885051458295E+15
Surface area 83981840213.926
Circumference 513650.39886193

Square

Length = n
Perimeter 327000
Area 6683062500
Diagonal 115611.958724

Cube

Length = n
Surface area 40098375000
Volume 546340359375000
Space diagonal 141595.15351876

Equilateral Triangle

Length = n
Perimeter 245250
Area 2893850950.0396
Altitude 70797.576759378

Triangular Pyramid

Length = n
Surface area 2893850950.0396
Volume 64386828824993
Height 38537.319574667