81275013 is an odd 8-digits composite number following 81275012
and preceding 81275014 . In scientific notation, it is written as 8.1275013 × 10^7.
The sum of its digits is 27. It has a total of 2 prime factors and 4 positive divisors.
There are 54183336 positive integers (up to 81275013) that are relatively prime to 81275013.
81275013 has 4 divisors, whose sum is 90305580
The reverse of 81275013 is 31057218
Previous prime number is 9
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
eighty-one million two hundred seventy-five thousand thirteen
Scientific notation
8.1275013 × 10^7
Engineering notation
8.1275013 × 10^6
Prime Factorization
9 × 9030557
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81275013
Product of the distinct prime numbers
The prime factorization of 81275013 is 9 × 9030557.
Since it has a total of 2 prime factors.
8 , 4 , 96 , 73 , 390 , 742 , 7240 , 5991 , 95627 , 73168 , 490014 , 395208 , 1920001 , 3289038 , 39170856 , 71966604 , 993293004 , 205834157 , 2436274005 , 3703994549
n×2
162550026
n×3
243825039
n×4
325100052
n×5
406375065
n÷2
40637506.5
n÷3
27091671
n÷3
20318753.25
n÷5
16255002.6
n2
6605627738150169
n3
5.3687248029132E+23
n4
4.3634317815019E+31
n5
3.5463797476618E+39
2 √n
9015.2655534931
3 √n
433.16399372827
4 √n
94.948752248216
5 √n
38.193671594419
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
-81275012
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 81275013 can be divided by 4 positive divisors.
The sum of these divisors (counting 81275013) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110110000010100010000101
3
Ternary
12122221012100200
4
Quaternary
10312002202011
5
Quinary
131301300023
6
Senary
12022001113
8
Octal
466024205
10
Decimal
81275013
12
Duodecimal
23276199
16
Hexadecimal
4d82885
20
Vigesimal
157j7ad
36
Base36
1ce079
md5
7be68c8f3cf34bb650ebec95da7e3fa5
sha1
d92e2c40aba07b5ee878feb79e5fa48ba504db89
sha256
8760e72fd94ff54f0d111dbed188078c9dd6d178cb75b13b51535114ab4a72b2
sha512
32dea0a2c2d601bd3958875cbbba90ce99d65df75fbb213295367d10e9c8dd4524bb6753f76a7fa438bd0f46f4fb44a633add79f56f0681d9ff3bc3876428e78
ripemd-160
988289a0daeb03f9f57a22ca496be574c954c0ea
Diameter
162550026
Circumference
510665967.52243
Area
2.0752191574522E+16
Volume
2.2488461866636E+24
Surface area
8.3008766298086E+16
Circumference
510665967.52243
Perimeter
325100052
Area
6605627738150169
Diagonal
114940225.66665
Surface area
39633766428901014
Volume
5.3687248029132E+23
Space diagonal
140772451.90182
Perimeter
243825039
Area
2.8603207145906E+15
Altitude
70386225.95091
Surface area
2.8603207145906E+15
Volume
6.3271028574405E+22
Height
38313408.55555