81322015 is an odd 8-digits composite number following 81322014
and preceding 81322016 . In scientific notation, it is written as 8.1322015 × 10^7.
The sum of its digits is 22. It has a total of 2 prime factors and 4 positive divisors.
There are 65057608 positive integers (up to 81322015) that are relatively prime to 81322015.
81322015 has 4 divisors, whose sum is 97586424
The reverse of 81322015 is 51022318
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 22
Digital Root 4
Name
eighty-one million three hundred twenty-two thousand fifteen
Scientific notation
8.1322015 × 10^7
Engineering notation
8.1322015 × 10^6
Prime Factorization
5 × 16264403
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81322015
Product of the distinct prime numbers
The prime factorization of 81322015 is 5 × 16264403.
Since it has a total of 2 prime factors.
10 , 5 , 95 , 69 , 586 , 136 , 2339 , 5250 , 92120 , 15526 , 606913 , 245586 , 6086941 , 8230202 , 23074445 , 38441607 , 147954334 , 113924791 , 6367049941 , 7007874815
n×2
162644030
n×3
243966045
n×4
325288060
n×5
406610075
n÷2
40661007.5
n÷3
27107338.333333
n÷3
20330503.75
n÷5
16264403
n2
6613270123660225
n3
5.3780445219535E+23
n4
4.3735341728497E+31
n5
3.556646116075E+39
2 √n
9017.871977357
3 √n
433.24747838872
4 √n
94.962476680829
5 √n
38.19808811498
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81322014
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81322015 can be divided by 4 positive divisors.
The sum of these divisors (counting 81322015) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110110001110000000011111
3
Ternary
12200000120211111
4
Quaternary
10312032000133
5
Quinary
131304301030
6
Senary
12023002451
8
Octal
466160037
10
Decimal
81322015
12
Duodecimal
23299427
16
Hexadecimal
4d8e01f
20
Vigesimal
158550f
36
Base36
1cf0gv
md5
5da2c9c8d4f39cb26a8e71b80417cf52
sha1
2f3799f48874914408f96980a4a74cc288e96b06
sha256
cc99f532be73b5690815ccad4ddc564f6ba583936e4fa9d595ea6033acb96d53
sha512
caf772af89934d52591361fd93e74c7ad0894b9ac6599b697fb00bf7cefc5a3a66e99d3f3e2765c90ca77a992f88ff06d183e18424f9fd364d572634e46afcb1
ripemd-160
0b236b0ddb72cc15ff2f983f748278004c1d4796
Diameter
162644030
Circumference
510961289.79824
Area
2.0776200836696E+16
Volume
2.2527500214464E+24
Surface area
8.3104803346783E+16
Circumference
510961289.79824
Perimeter
325288060
Area
6613270123660225
Diagonal
115006696.53251
Surface area
39679620741961350
Volume
5.3780445219535E+23
Space diagonal
140853861.75388
Perimeter
243966045
Area
2.8636299645892E+15
Altitude
70426930.876939
Surface area
2.8636299645892E+15
Volume
6.3380862516608E+22
Height
38335565.510836