81506773 is an odd 8-digits composite number following 81506772
and preceding 81506774 . In scientific notation, it is written as 8.1506773 × 10^7.
The sum of its digits is 37. It has a total of 4 prime factors and 8 positive divisors.
There are 79993980 positive integers (up to 81506773) that are relatively prime to 81506773.
81506773 has 8 divisors, whose sum is 83047040
The reverse of 81506773 is 37760518
Previous prime number is 67
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
eighty-one million five hundred six thousand seven hundred seventy-three
Scientific notation
8.1506773 × 10^7
Engineering notation
8.1506773 × 10^6
Prime Factorization
67 × 67 × 67 × 271
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
18157
Product of the distinct prime numbers
The prime factorization of 81506773 is 67 × 67 × 67 × 271.
Since it has a total of 4 prime factors.
1 , 7 , 35 , 49 , 645 , 351 , 180 , 2004 , 50310 , 53958 , 357656 , 344525 , 4377325 , 7273374 , 42577047 , 77967594 , 920893975 , 620320393 , 4303033082 , 530364303
n×2
163013546
n×3
244520319
n×4
326027092
n×5
407533865
n÷2
40753386.5
n÷3
27168924.333333
n÷3
20376693.25
n÷5
16301354.6
n2
6643354044873529
n3
5.4147835009414E+23
n4
4.4134152965537E+31
n5
3.5972323873093E+39
2 √n
9028.1101566164
3 √n
433.57533300634
4 √n
95.016367835318
5 √n
38.215429046634
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
-81506772
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 81506773 can be divided by 8 positive divisors.
The sum of these divisors (counting 81506773) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110110111011000111010101
3
Ternary
12200100222021101
4
Quaternary
10312323013111
5
Quinary
131331204043
6
Senary
12030550101
8
Octal
466730725
10
Decimal
81506773
12
Duodecimal
23368331
16
Hexadecimal
4dbb1d5
20
Vigesimal
15986id
36
Base36
1ciz11
md5
cc454a1cb1cf019117e57315857a9894
sha1
bf5e36ca0aab18ea3e587942d61a3ebd877b337b
sha256
d5e6ad0e54655e6417d1f97913428d823e7d1c40820cfeea8594de2566ea02d1
sha512
28d0524b186a26e860554faa8e9dad0ca32f3d0ced41549dc75b6da07865f74f10c7885e7d27a4d97bebe4baeb998f1a5da2959ef645bda00e086465d2a6461b
ripemd-160
26315fbf81b223f029a3d7ccbdf0ca4cfebcfce9
Diameter
163013546
Circumference
512122158.54922
Area
2.0870712262571E+16
Volume
2.2681392089782E+24
Surface area
8.3482849050283E+16
Circumference
512122158.54922
Perimeter
326027092
Area
6643354044873529
Diagonal
115267983.80187
Surface area
39860124269241174
Volume
5.4147835009414E+23
Space diagonal
141173871.99698
Perimeter
244520319
Area
2.8766566845973E+15
Altitude
70586935.998492
Surface area
2.8766566845973E+15
Volume
6.3813835536211E+22
Height
38422661.267288