81946875 is an odd 8-digits composite number following 81946874
and preceding 81946876 . In scientific notation, it is written as 8.1946875 × 10^7.
The sum of its digits is 48. It has a total of 4 prime factors and 16 positive divisors.
There are 43700000 positive integers (up to 81946875) that are relatively prime to 81946875.
81946875 has 16 divisors, whose sum is 114555168
The reverse of 81946875 is 57864918
Previous prime number is 125
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 48
Digital Root 3
Name
eighty-one million nine hundred forty-six thousand eight hundred seventy-five
Scientific notation
8.1946875 × 10^7
Engineering notation
8.1946875 × 10^6
Prime Factorization
3 × 25 × 125 × 8741
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
81946875
Product of the distinct prime numbers
The prime factorization of 81946875 is 3 × 25 × 125 × 8741.
Since it has a total of 4 prime factors.
1 , 10 , 76 , 99 , 518 , 838 , 3404 , 8160 , 55259 , 66941 , 552807 , 47261 , 2435036 , 2745559 , 70311917 , 88443552 , 874871890 , 719478919 , 7915098977 , 4598379956
n×2
163893750
n×3
245840625
n×4
327787500
n×5
409734375
n÷2
40973437.5
n÷3
27315625
n÷3
20486718.75
n÷5
16389375
n2
6715290322265625
n3
5.5029705662741E+23
n4
4.5095124112314E+31
n5
3.6954044987413E+39
2 √n
9052.4513254698
3 √n
434.35430693479
4 √n
95.144370960503
5 √n
38.256609620639
1 , 3 , 25 , 75 , 125 , 375 , 3125 , 8741 , 9375 , 26223 , 218525 , 655575 , 1092625 , 3277875 , 27315625 , 81946875
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
-81946874
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 81946875 can be divided by 16 positive divisors.
The sum of these divisors (counting 81946875) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100111000100110100011111011
3
Ternary
12201012022222110
4
Quaternary
10320212203323
5
Quinary
131434300000
6
Senary
12044223403
8
Octal
470464373
10
Decimal
81946875
12
Duodecimal
2353ab63
16
Hexadecimal
4e268fb
20
Vigesimal
15c373f
36
Base36
1csem3
md5
8f5b043b590dfe5f740b2dbeaa56cfd4
sha1
2376a76bd8382d8c4724c981e0bd78d8bec86d58
sha256
c55d216f0a61f3146da6cf230f4b44285ac437d33fe9a87337c182cb8b416ad3
sha512
aacc645b961b3ba3887d417ef346aee3e5178a68e891257aa2deab6d337f249de4285f26d0111fbd2c84ab9b9f39d40153216558e20706546a8cac6ecc07ccad
ripemd-160
f291842d21cd6c4852e79ace8300d16089b5d118
Diameter
163893750
Circumference
514887400.96928
Area
2.1096706743152E+16
Volume
2.3050789205237E+24
Surface area
8.4386826972609E+16
Circumference
514887400.96928
Perimeter
327787500
Area
6715290322265625
Diagonal
115890382.01909
Surface area
40291741933593750
Volume
5.5029705662741E+23
Space diagonal
141936151.0215
Perimeter
245840625
Area
2.9078060064349E+15
Altitude
70968075.510748
Surface area
2.9078060064349E+15
Volume
6.485313006804E+22
Height
38630127.339698