81330885 is an odd 8-digits composite number following 81330884
and preceding 81330886 . In scientific notation, it is written as 8.1330885 × 10^7.
The sum of its digits is 36. It has a total of 5 prime factors and 24 positive divisors.
There are 42456960 positive integers (up to 81330885) that are relatively prime to 81330885.
81330885 has 24 divisors, whose sum is 95390568
The reverse of 81330885 is 58803318
Previous prime number is 53
Is Prime? no Number parity odd Number length 8 Sum of Digits 36 Digital Root 9
Name
eighty-one million three hundred thirty thousand eight hundred eighty-five
Scientific notation
8.1330885 × 10^7
Engineering notation
8.1330885 × 10^6
Prime Factorization
9 × 45 × 9 × 53 × 421
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
5 Total number of prime factors
rad Radical
9036765 Product of the distinct prime numbers
The prime factorization of 81330885 is 9 × 45 × 9 × 53 × 421.
Since it has a total of 5 prime factors.
10 , 7 , 61 , 4 , 830 , 314 , 2830 , 4153 , 60712 , 82972 , 766699 , 80504 , 8409021 , 1563366 , 37521372 , 12462963 , 84410015 , 324978192 , 7392161560 , 4744315200
n×2
162661770
n×3
243992655
n×4
325323540
n×5
406654425
n÷2
40665442.5
n÷3
27110295
n÷3
20332721.25
n÷5
16266177
n2
6614712854883225
n3
5.3798045050853E+23
n4
4.3754426152557E+31
n5
3.5585862016546E+39
2 √n9018.3637651184
3 √n433.26322961928
4 √n94.965066024925
5 √n38.198921351245
1 , 9 , 45 , 53 , 81 , 405 , 421 , 477 , 2385 , 3645 , 3789 , 4293 , 18945 , 21465 , 22313 , 34101 , 170505 , 193185 , 200817 , 1004085 , 1534545 , 1807353 , 9036765 , 81330885
24 divisors
τ Total Divisors
24 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-81330884 Sum of the proper positive divisors of n
A Arithmetic Mean
0.041666666666667 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
24 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81330885 can be divided by 24 positive divisors.
The sum of these divisors (counting 81330885) is 1, the average is 0.041666666666667.
Base
System
Value
2
Binary
100110110010000001011000101
3
Ternary
12200001001000000
4
Quaternary
10312100023011
5
Quinary
131310042020
6
Senary
12023111513
8
Octal
466201305
10
Decimal
81330885
12
Duodecimal
232a2599
16
Hexadecimal
4d902c5
20
Vigesimal
1586745
36
Base36
1cf7b9
md5
a3a7b6becd3295245da33f5b1b5c5ea2
sha1
ac4b0c6555adbf796af61ad24a29c71c55cebccd
sha256
be5ea5960a76af9d91415ffbfe9e0ee5ececc49a45ac0e597276377f7b05dc24
sha512
d8ececcc7d4890a6802f60d936ebab0faee3949282664c0868ce4ee5acad4de436e5b5fb85b96816f0b8d97bd1c313404ee7ae76f735ed662e246894b8362795
ripemd-160
f6efd0718cd463fbb66b1a36ce0d77a53942c709
Diameter
162661770
Circumference
511017021.65191
Area
2.0780733310507E+16
Volume
2.2534872414567E+24
Surface area
8.3122933242028E+16
Circumference
511017021.65191
Perimeter
325323540
Area
6614712854883225
Diagonal
115019240.60681
Surface area
39688277129299350
Volume
5.3798045050853E+23
Space diagonal
140869225.04454
Perimeter
243992655
Area
2.8642546855342E+15
Altitude
70434612.522271
Surface area
2.8642546855342E+15
Volume
6.3401604116729E+22
Height
38339746.868936