81793979 is an odd 8-digits composite number following 81793978
and preceding 81793980 . In scientific notation, it is written as 8.1793979 × 10^7.
The sum of its digits is 53. It has a total of 2 prime factors and 4 positive divisors.
There are 81369984 positive integers (up to 81793979) that are relatively prime to 81793979.
81793979 has 4 divisors, whose sum is 82217976
The reverse of 81793979 is 97939718
Previous prime number is 193
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 53
Digital Root 8
Name
eighty-one million seven hundred ninety-three thousand nine hundred seventy-nine
Scientific notation
8.1793979 × 10^7
Engineering notation
8.1793979 × 10^6
Prime Factorization
193 × 423803
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81793979
Product of the distinct prime numbers
The prime factorization of 81793979 is 193 × 423803.
Since it has a total of 2 prime factors.
7 , 4 , 1 , 35 , 479 , 733 , 4114 , 7082 , 75330 , 50968 , 410131 , 159945 , 4044232 , 1484475 , 48087728 , 65199147 , 579548674 , 84967028 , 8632490504 , 8170992751
n×2
163587958
n×3
245381937
n×4
327175916
n×5
408969895
n÷2
40896989.5
n÷3
27264659.666667
n÷3
20448494.75
n÷5
16358795.8
n2
6690255000652441
n3
5.4722257702801E+23
n4
4.4759511973755E+31
n5
3.6610585824316E+39
2 √n
9044.0023772664
3 √n
434.08400017778
4 √n
95.099959922528
5 √n
38.242323162733
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
-81793978
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 81793979 can be divided by 4 positive divisors.
The sum of these divisors (counting 81793979) is 1, the average is 0.25.
Base
System
Value
2
Binary
100111000000001001110111011
3
Ternary
12200220120020122
4
Quaternary
10320001032323
5
Quinary
131414401404
6
Senary
12041043455
8
Octal
470011673
10
Decimal
81793979
12
Duodecimal
2348658b
16
Hexadecimal
4e013bb
20
Vigesimal
15b44ij
36
Base36
1cp4mz
md5
1cd86eddfee3e9ae789d636ad345cefa
sha1
287233a0fa5576a0add142cabf61b2a67b83dbdd
sha256
322e7680c0fb06993f038bc70ddabd2276561cfb3246261ca791acb520f3e051
sha512
a229b2091c76058a60b1b6762d2155f8844d44ba4d8409ebdcf22fc5eab0c91a5af1a70c33b21595f5e60bd430f9d9ee4be410ca6ad2799cf412195d385cd356
ripemd-160
7312f60e87e408f81837c39cf6fb8ebeb1f759a6
Diameter
163587958
Circumference
513926727.06856
Area
2.1018055960692E+16
Volume
2.2922005704929E+24
Surface area
8.4072223842768E+16
Circumference
513926727.06856
Perimeter
327175916
Area
6690255000652441
Diagonal
115674154.42226
Surface area
40141530003914646
Volume
5.4722257702801E+23
Space diagonal
141671327.38122
Perimeter
245381937
Area
2.8969653941804E+15
Altitude
70835663.690611
Surface area
2.8969653941804E+15
Volume
6.4490799172481E+22
Height
38558051.474087