81680265 is an odd 8-digits composite number following 81680264
and preceding 81680266 . In scientific notation, it is written as 8.1680265 × 10^7.
The sum of its digits is 36. It has a total of 3 prime factors and 8 positive divisors.
There are 43562736 positive integers (up to 81680265) that are relatively prime to 81680265.
81680265 has 8 divisors, whose sum is 111327360
The reverse of 81680265 is 56208618
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9
Name
eighty-one million six hundred eighty thousand two hundred sixty-five
Scientific notation
8.1680265 × 10^7
Engineering notation
8.1680265 × 10^6
Prime Factorization
45 × 3 × 605039
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81680265
Product of the distinct prime numbers
The prime factorization of 81680265 is 45 × 3 × 605039.
Since it has a total of 3 prime factors.
5 , 3 , 80 , 36 , 501 , 975 , 9213 , 2448 , 18161 , 92944 , 518303 , 576397 , 7037186 , 9252235 , 70048439 , 82461732 , 564611458 , 372390265 , 594122144 , 9835709103
n×2
163360530
n×3
245040795
n×4
326721060
n×5
408401325
n÷2
40840132.5
n÷3
27226755
n÷3
20420066.25
n÷5
16336053
n2
6671665690470225
n3
5.4494342158902E+23
n4
4.4511123085398E+31
n5
3.6356803290629E+39
2 √n
9037.7134829557
3 √n
433.882745264
4 √n
95.066889519726
5 √n
38.231683974099
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81680264
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81680265 can be divided by 8 positive divisors.
The sum of these divisors (counting 81680265) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110111100101011110001001
3
Ternary
12200200210021000
4
Quaternary
10313211132021
5
Quinary
131402232030
6
Senary
12034405213
8
Octal
467453611
10
Decimal
81680265
12
Duodecimal
23430809
16
Hexadecimal
4de5789
20
Vigesimal
15aa0d5
36
Base36
1cmow9
md5
c5a9cc681a9eadfb66f4043141af155b
sha1
a39a504cc6d2c8f62dd979142c9466a9e0491546
sha256
1072afa2c2ae789931cf89d660a3a0553bd138967516cc06f33bd3ada5adb709
sha512
e86e50f8b427e218c0b556b548d52db9b20f4c9ec39b9ca0fc3735ad48f5411d1be49cd9b7bff08e331b7efff635d120c72487f328b7112054c52101b97e9381
ripemd-160
27cd029fbca88697b283d935266385d876ddaff4
Diameter
163360530
Circumference
513212240.93454
Area
2.0959655920388E+16
Volume
2.2826536665149E+24
Surface area
8.3838623681553E+16
Circumference
513212240.93454
Perimeter
326721060
Area
6671665690470225
Diagonal
115513338.54123
Surface area
40029994142821350
Volume
5.4494342158902E+23
Space diagonal
141474368.95569
Perimeter
245040795
Area
2.8889159867521E+15
Altitude
70737184.477845
Surface area
2.8889159867521E+15
Volume
6.4222198128099E+22
Height
38504446.180409