81796780 is an even 8-digits composite number following 81796779
and preceding 81796781 . In scientific notation, it is written as 8.1796780 × 10^7.
The sum of its digits is 46. It has a total of 4 prime factors and 12 positive divisors.
There are 30201792 positive integers (up to 81796780) that are relatively prime to 81796780.
81796780 has 12 divisors, whose sum is 145347048
The reverse of 81796780 is 08769718
Previous prime number is 65
Is Prime? no
Number parity even
Number length 8
Sum of Digits 46
Digital Root 1
Name
eighty-one million seven hundred ninety-six thousand seven hundred eighty
Scientific notation
8.1796780 × 10^7
Engineering notation
8.1796780 × 10^6
Prime Factorization
2 × 2 × 65 × 314603
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
40898390
Product of the distinct prime numbers
The prime factorization of 81796780 is 2 × 2 × 65 × 314603.
Since it has a total of 4 prime factors.
2 , 1 , 65 , 73 , 574 , 929 , 7098 , 1345 , 15577 , 54878 , 329447 , 884453 , 8066962 , 6324881 , 39117645 , 46649512 , 464286797 , 134076195 , 5394857986 , 563961797
n×2
163593560
n×3
245390340
n×4
327187120
n×5
408983900
n÷2
40898390
n÷3
27265593.333333
n÷3
20449195
n÷5
16359356
n2
6690713218368400
n3
5.4727879716597E+23
n4
4.476564337045E+31
n5
3.6616854823311E+39
2 √n
9044.1572299469
3 √n
434.0889551285
4 √n
95.100774076486
5 √n
38.242585077562
1 , 2 , 4 , 65 , 130 , 260 , 314603 , 629206 , 1258412 , 20449195 , 40898390 , 81796780
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81796779
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81796780 can be divided by 12 positive divisors.
The sum of these divisors (counting 81796780) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
100111000000001111010101100
3
Ternary
12200220201002101
4
Quaternary
10320001322230
5
Quinary
131414444110
6
Senary
12041104444
8
Octal
470017254
10
Decimal
81796780
12
Duodecimal
23488124
16
Hexadecimal
4e01eac
20
Vigesimal
15b4bj0
36
Base36
1cp6ss
md5
f6985d59f3428b6279d80b3cad9dfb1f
sha1
81e582b052fb1e7f734cda81b4872aad367a700d
sha256
2423412a8d95c588e3a9a199d66035d91a82f08e33f5f7856d059a48c54709a6
sha512
be44a9a3606d35a12069c4dc5339be68dab8f139947dfe44209af087db5cdb97cd6cd1c8d7182cff49cceeb22d1d88c7bb2a4d0a0d902eb185871a9cf5c2a8a8
ripemd-160
604d95586968ed00e318f44be040d45e6475b420
Diameter
163593560
Circumference
513944326.2706
Area
2.1019495494102E+16
Volume
2.2924360648561E+24
Surface area
8.4077981976409E+16
Circumference
513944326.2706
Perimeter
327187120
Area
6690713218368400
Diagonal
115678115.63445
Surface area
40144279310210400
Volume
5.4727879716597E+23
Space diagonal
141676178.85553
Perimeter
245390340
Area
2.8971638082717E+15
Altitude
70838089.427767
Surface area
2.8971638082717E+15
Volume
6.4497424779279E+22
Height
38559371.878149