81379968 (number)

81379968 is an even 8-digits composite number following 81379967 and preceding 81379969. In scientific notation, it is written as 8.1379968 × 10^7. The sum of its digits is 51. It has a total of 9 prime factors and 32 positive divisors. There are 27126528 positive integers (up to 81379968) that are relatively prime to 81379968.

Interesting facts

Basic properties

Name

Name eighty-one million three hundred seventy-nine thousand nine hundred sixty-eight

Notation

Scientific notation 8.1379968 × 10^7
Engineering notation 8.1379968 × 10^6

Prime Factorization of 81379968

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 211927

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 9
Total number of prime factors
rad Radical 1271562
Product of the distinct prime numbers

The prime factorization of 81379968 is 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 211927. Since it has a total of 9 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81379968)

Multiplication

n×y
n×2 162759936
n×3 244139904
n×4 325519872
n×5 406899840

Division

n÷y
n÷2 40689984
n÷3 27126656
n÷3 20344992
n÷5 16275993.6

Exponentiation

ny
n2 6622699191681024
n3 5.3895504829263E+23
n4 4.3860144583492E+31
n5 3.56933716268E+39

Nth Root

y√n
2√n 9021.0846354527
3√n 433.35036987589
4√n 94.979390582656
5√n 38.203530830699

Divisors of 81379968

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81379967
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81379968 can be divided by 32 positive divisors. The sum of these divisors (counting 81379968) is 1, the average is 0.03125.

Base conversion 81379968

Base System Value
2 Binary 100110110011100001010000000
3 Ternary 12200010112022220
4 Quaternary 10312130022000
5 Quinary 131313124333
6 Senary 12024131040
8 Octal 466341200
10 Decimal 81379968
12 Duodecimal 23306a80
16 Hexadecimal 4d9c280
20 Vigesimal 158c9i8
36 Base36 1cg96o

Cryptographic Hash Functions

md5 3a2a1d307d95811f3131f81080b281ab
sha1 487d4abdf361504a4ef8e5b0143df2b9bac6486c
sha256 f83cc2e443b43331c66de8d7d54dfddb559e359ff9522c9809fe7c4ab05b32b5
sha512 517f8fb3b215696d1d64cb1d76030bc4bb83a590b97ee66781f2c55c1795115c533c63c7002016d7ed9efabb6c20506d4361b417598328f80f49430c07f564f5
ripemd-160 275d5e1f74e3b6de96ed1af74ee12467fce11c79

81379968 as geometric shapes

Circle

Radius = n
Diameter 162759936
Circumference 511325419.23634
Area 2.080582312752E+16

Sphere

Radius = n
Volume 2.2575696271083E+24
Surface area 8.3223292510081E+16
Circumference 511325419.23634

Square

Length = n
Perimeter 325519872
Area 6622699191681024
Diagonal 115088654.45109

Cube

Length = n
Surface area 39736195150086144
Volume 5.3895504829263E+23
Space diagonal 140954239.29433

Equilateral Triangle

Length = n
Perimeter 244139904
Area 2.8677128708092E+15
Altitude 70477119.647165

Triangular Pyramid

Length = n
Surface area 2.8677128708092E+15
Volume 6.3516461567073E+22
Height 38362884.817029