81621310 (number)

81621310 is an even 8-digits composite number following 81621309 and preceding 81621311. In scientific notation, it is written as 8.1621310 × 10^7. The sum of its digits is 22. It has a total of 4 prime factors and 16 positive divisors. There are 31889088 positive integers (up to 81621310) that are relatively prime to 81621310.

Interesting facts

Basic properties

Name

Name eighty-one million six hundred twenty-one thousand three hundred ten

Notation

Scientific notation 8.1621310 × 10^7
Engineering notation 8.1621310 × 10^6

Prime Factorization of 81621310

Prime Factorization 2 × 5 × 43 × 189817

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81621310
Product of the distinct prime numbers

The prime factorization of 81621310 is 2 × 5 × 43 × 189817. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 2, 98, 32, 928, 941, 9579, 9481, 13877, 63109, 290916, 307185, 484787, 6409128, 92176564, 39137373, 165343837, 138752087, 3506692282, 5688586106

Basic calculations (n = 81621310)

Multiplication

n×y
n×2 163242620
n×3 244863930
n×4 326485240
n×5 408106550

Division

n÷y
n÷2 40810655
n÷3 27207103.333333
n÷3 20405327.5
n÷5 16324262

Exponentiation

ny
n2 6662038246116100
n3 5.437642889181E+23
n4 4.4382753592714E+31
n5 3.6225784896445E+39

Nth Root

y√n
2√n 9034.4512838357
3√n 433.77833116443
4√n 95.049730582657
5√n 38.226163424059

Divisors of 81621310

1, 2, 5, 10, 43, 86, 215, 430, 189817, 379634, 949085, 1898170, 8162131, 16324262, 40810655, 81621310

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 -81621309
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 81621310 can be divided by 16 positive divisors. The sum of these divisors (counting 81621310) is 1, the average is 0.0625.

Base conversion 81621310

Base System Value
2 Binary 100110111010111000100111110
3 Ternary 12200120210101111
4 Quaternary 10313113010332
5 Quinary 131343340220
6 Senary 12033232234
8 Octal 467270476
10 Decimal 81621310
12 Duodecimal 2340267a
16 Hexadecimal 4dd713e
20 Vigesimal 15a2d5a
36 Base36 1clfem

Cryptographic Hash Functions

md5 fed363228eb282ba3406b363c7e7792d
sha1 8292d4c8cd31f3a673089e99cf02e6e79bcc042a
sha256 aa4d9374612182311580dd06dcd08aa5390ca8c126cd6e646208b2c0a683e2e3
sha512 3889b574ac5f84d976f70eee8279310412caec22992ffb435395575b9e5575314e6690f2959d890cc940f43a112aea62b703787dd6465e16b49827d60e7cb758
ripemd-160 c120a3879094fca2ca80620b4a6afc8b5815c8dc

81621310 as geometric shapes

Circle

Radius = n
Diameter 163242620
Circumference 512841815.74475
Area 2.0929410411933E+16

Sphere

Radius = n
Volume 2.2777145271328E+24
Surface area 8.371764164773E+16
Circumference 512841815.74475

Square

Length = n
Perimeter 326485240
Area 6662038246116100
Diagonal 115429963.58066

Cube

Length = n
Surface area 39972229476696600
Volume 5.437642889181E+23
Space diagonal 141372255.90033

Equilateral Triangle

Length = n
Perimeter 244863930
Area 2.88474718106E+15
Altitude 70686127.950165

Triangular Pyramid

Length = n
Surface area 2.88474718106E+15
Volume 6.4083236010178E+22
Height 38476654.526886