81966 (number)

81966 is an even 5-digits composite number following 81965 and preceding 81967. In scientific notation, it is written as 8.1966 × 10^4. The sum of its digits is 30. It has a total of 4 prime factors and 16 positive divisors. There are 25848 positive integers (up to 81966) that are relatively prime to 81966.

Interesting facts

Basic properties

Name

Name eighty-one thousand nine hundred sixty-six

Notation

Scientific notation 8.1966 × 10^4
Engineering notation 8.1966 × 10^3

Prime Factorization of 81966

Prime Factorization 2 × 3 × 19 × 719

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81966
Product of the distinct prime numbers

The prime factorization of 81966 is 2 × 3 × 19 × 719. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 10, 21, 28, 684, 276, 6579, 7854, 99569, 45015, 919526, 698145, 3410221, 5044250, 46702512, 94922782, 112467034, 322635857, 8831960602, 8851572256

Basic calculations (n = 81966)

Multiplication

n×y
n×2 163932
n×3 245898
n×4 327864
n×5 409830

Division

n÷y
n÷2 40983
n÷3 27322
n÷3 20491.5
n÷5 16393.2

Exponentiation

ny
n2 6718425156
n3 550682436336696
n4 4.5137236576774E+19
n5 3.6997187332518E+24

Nth Root

y√n
2√n 286.29704853526
3√n 43.438809459688
4√n 16.920314670102
5√n 9.6100743647828

Divisors of 81966

1, 2, 3, 6, 19, 38, 57, 114, 719, 1438, 2157, 4314, 13661, 27322, 40983, 81966

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 -81965
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 81966 can be divided by 16 positive divisors. The sum of these divisors (counting 81966) is 1, the average is 0.0625.

Base conversion 81966

Base System Value
2 Binary 10100000000101110
3 Ternary 11011102210
4 Quaternary 110000232
5 Quinary 10110331
6 Senary 1431250
8 Octal 240056
10 Decimal 81966
12 Duodecimal 3b526
16 Hexadecimal 1402e
20 Vigesimal a4i6
36 Base36 1r8u

Cryptographic Hash Functions

md5 858a7d21421b7492a5c8a80b02b65822
sha1 ce294d7775aec248e97dc9798c460b6c556248d5
sha256 2e1ad2ba8bdbd421becb82d571debc4fe9c77520867bb1aa8402405b72fdf4f6
sha512 99f1fa0ca72a26f93d1b56e666a020248f0d360d243502f03d915198edab2ac3d271d889cf5a59b6af48d59decff806e7ea5bacd99043918b0ed91c0d30e5192
ripemd-160 6492d02d8de4e202c6a69ffa06a09341939766e3

81966 as geometric shapes

Circle

Radius = n
Diameter 163932
Circumference 515007.56688828
Area 21106555113.782

Sphere

Radius = n
Volume 2.3066931952751E+15
Surface area 84426220455.13
Circumference 515007.56688828

Square

Length = n
Perimeter 327864
Area 6718425156
Diagonal 115917.42885347

Cube

Length = n
Surface area 40310550936
Volume 550682436336696
Space diagonal 141969.27649319

Equilateral Triangle

Length = n
Perimeter 245898
Area 2909163429.2602
Altitude 70984.638246595

Triangular Pyramid

Length = n
Surface area 2909163429.2602
Volume 64898547502335
Height 38639.142951158