81686875 (number)

81686875 is an odd 8-digits composite number following 81686874 and preceding 81686876. In scientific notation, it is written as 8.1686875 × 10^7. The sum of its digits is 49. It has a total of 4 prime factors and 10 positive divisors. There are 65349000 positive integers (up to 81686875) that are relatively prime to 81686875.

Interesting facts

Basic properties

Name

Name eighty-one million six hundred eighty-six thousand eight hundred seventy-five

Notation

Scientific notation 8.1686875 × 10^7
Engineering notation 8.1686875 × 10^6

Prime Factorization of 81686875

Prime Factorization 5 × 25 × 5 × 130699

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 16337375
Product of the distinct prime numbers

The prime factorization of 81686875 is 5 × 25 × 5 × 130699. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 5, 51, 92, 814, 401, 9728, 8558, 17740, 2752, 759259, 738200, 7525782, 5986276, 89132466, 61431378, 200517571, 362754672, 4367266427, 444028148

Basic calculations (n = 81686875)

Multiplication

n×y
n×2 163373750
n×3 245060625
n×4 326747500
n×5 408434375

Division

n÷y
n÷2 40843437.5
n÷3 27228958.333333
n÷3 20421718.75
n÷5 16337375

Exponentiation

ny
n2 6672745547265625
n3 5.4507573142629E+23
n4 4.4525533138553E+31
n5 3.6371516597974E+39

Nth Root

y√n
2√n 9038.0791653979
3√n 433.89444897883
4√n 95.068812790515
5√n 38.232302736173

Divisors of 81686875

1, 5, 25, 125, 625, 130699, 653495, 3267475, 16337375, 81686875

10 divisors

τ Total Divisors 10
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81686874
Sum of the proper positive divisors of n
A Arithmetic Mean 0.1
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 10
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81686875 can be divided by 10 positive divisors. The sum of these divisors (counting 81686875) is 1, the average is 0.1.

Base conversion 81686875

Base System Value
2 Binary 100110111100111000101011011
3 Ternary 12200201010022211
4 Quaternary 10313213011123
5 Quinary 131402440000
6 Senary 12034455551
8 Octal 467470533
10 Decimal 81686875
12 Duodecimal 234345b7
16 Hexadecimal 4de715b
20 Vigesimal 15aah3f
36 Base36 1cmtzv

Cryptographic Hash Functions

md5 416f3ba1b6247367823c4cceb51d3a64
sha1 2c7dce11b4219b5bd33c8df757528189dca5f15a
sha256 4e408d057aa4d7b00b649d02e2f726b69e2cbf9f585e15c50c2467b01463c9e7
sha512 732638c3e1981c40b2f6192d6ebbbbeaf09794b1fcabffee4670a43814d7b83af785e9e3dd39c307b8f3fa458a7b211a3a1391fca93732d506dbce961d40f920
ripemd-160 6bfd3a0a52907227fcdd7d56c62c32b76bdccdd2

81686875 as geometric shapes

Circle

Radius = n
Diameter 163373750
Circumference 513253772.78942
Area 2.0963048390564E+16

Sphere

Radius = n
Volume 2.2832078846652E+24
Surface area 8.3852193562255E+16
Circumference 513253772.78942

Square

Length = n
Perimeter 326747500
Area 6672745547265625
Diagonal 115522686.49288

Cube

Length = n
Surface area 40036473283593750
Volume 5.4507573142629E+23
Space diagonal 141485817.81153

Equilateral Triangle

Length = n
Perimeter 245060625
Area 2.8893835784608E+15
Altitude 70742908.905764

Triangular Pyramid

Length = n
Surface area 2.8893835784608E+15
Volume 6.4237790991958E+22
Height 38507562.164292