81728295 is an odd 8-digits composite number following 81728294
and preceding 81728296 . In scientific notation, it is written as 8.1728295 × 10^7.
The sum of its digits is 42. It has a total of 4 prime factors and 16 positive divisors.
There are 39625760 positive integers (up to 81728295) that are relatively prime to 81728295.
81728295 has 16 divisors, whose sum is 142653312
The reverse of 81728295 is 59282718
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 42
Digital Root 6
Name
eighty-one million seven hundred twenty-eight thousand two hundred ninety-five
Scientific notation
8.1728295 × 10^7
Engineering notation
8.1728295 × 10^6
Prime Factorization
3 × 5 × 11 × 495323
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
81728295
Product of the distinct prime numbers
The prime factorization of 81728295 is 3 × 5 × 11 × 495323.
Since it has a total of 4 prime factors.
10 , 1 , 30 , 69 , 483 , 799 , 9326 , 4447 , 98262 , 43688 , 991295 , 368765 , 6125088 , 5826391 , 33805875 , 66765155 , 969932305 , 767235190 , 7100220059 , 1767163752
n×2
163456590
n×3
245184885
n×4
326913180
n×5
408641475
n÷2
40864147.5
n÷3
27242765
n÷3
20432073.75
n÷5
16345659
n2
6679514203607025
n3
5.4590530728909E+23
n4
4.4615909996188E+31
n5
3.6463822538619E+39
2 √n
9040.3702910887
3 √n
433.9677731668
4 √n
95.080861854996
5 √n
38.236179150566
1 , 3 , 5 , 11 , 15 , 33 , 55 , 165 , 495323 , 1485969 , 2476615 , 5448553 , 7429845 , 16345659 , 27242765 , 81728295
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
-81728294
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 81728295 can be divided by 16 positive divisors.
The sum of these divisors (counting 81728295) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100110111110001001100100111
3
Ternary
12200210020010220
4
Quaternary
10313301030213
5
Quinary
131410301140
6
Senary
12035415423
8
Octal
467611447
10
Decimal
81728295
12
Duodecimal
23454573
16
Hexadecimal
4df1327
20
Vigesimal
15ag0ef
36
Base36
1cnpyf
md5
6b7b5309712cde33a2da0247eea2836b
sha1
65625c955300f08ebf7fa6bfbb2884f781a51f2d
sha256
9e48dd9e7b137e998b7a1b2f3d3d9b83d9b3ef1b058465d98d8a4a9dd3dd9c3e
sha512
1f100d23353eae95e41e6d7a8d3f00e8c666c5febb6ec1d0da9d7b8b201b5dbdf8f49d653c823e2c9bbda9f9d74b5c12fb7b8f32713f1889b35311bdaa2a0395
ripemd-160
dfa57bc0a5558a42380e0525a339792d160fb424
Diameter
163456590
Circumference
513514022.32484
Area
2.0984312751601E+16
Volume
2.2866828039134E+24
Surface area
8.3937251006402E+16
Circumference
513514022.32484
Perimeter
326913180
Area
6679514203607025
Diagonal
115581263.21863
Surface area
40077085221642150
Volume
5.4590530728909E+23
Space diagonal
141557559.35598
Perimeter
245184885
Area
2.8923144926313E+15
Altitude
70778779.677989
Surface area
2.8923144926313E+15
Volume
6.4335557444973E+22
Height
38527087.739543