81729669 is an odd 8-digits composite number following 81729668
and preceding 81729670 . In scientific notation, it is written as 8.1729669 × 10^7.
The sum of its digits is 48. It has a total of 4 prime factors and 16 positive divisors.
There are 46654272 positive integers (up to 81729669) that are relatively prime to 81729669.
81729669 has 16 divisors, whose sum is 124669568
The reverse of 81729669 is 96692718
Previous prime number is 1597
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 48
Digital Root 3
Name
eighty-one million seven hundred twenty-nine thousand six hundred sixty-nine
Scientific notation
8.1729669 × 10^7
Engineering notation
8.1729669 × 10^6
Prime Factorization
3 × 7 × 1597 × 2437
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
81729669
Product of the distinct prime numbers
The prime factorization of 81729669 is 3 × 7 × 1597 × 2437.
Since it has a total of 4 prime factors.
4 , 10 , 4 , 23 , 970 , 815 , 1323 , 1855 , 20586 , 85512 , 503840 , 698727 , 9150075 , 3555787 , 81055516 , 87415026 , 902902002 , 536985208 , 9805521602 , 9460148632
n×2
163459338
n×3
245189007
n×4
326918676
n×5
408648345
n÷2
40864834.5
n÷3
27243223
n÷3
20432417.25
n÷5
16345933.8
n2
6679738794849561
n3
5.4593284070951E+23
n4
4.4618910367418E+31
n5
3.6466887754698E+39
2 √n
9040.4462832318
3 √n
433.97020508008
4 √n
95.081261472657
5 √n
38.236307713524
1 , 3 , 7 , 21 , 1597 , 2437 , 4791 , 7311 , 11179 , 17059 , 33537 , 51177 , 3891889 , 11675667 , 27243223 , 81729669
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
-81729668
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 81729669 can be divided by 16 positive divisors.
The sum of these divisors (counting 81729669) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100110111110001100010000101
3
Ternary
12200210022000210
4
Quaternary
10313301202011
5
Quinary
131410322134
6
Senary
12035430033
8
Octal
467614205
10
Decimal
81729669
12
Duodecimal
23455319
16
Hexadecimal
4df1885
20
Vigesimal
15ag439
36
Base36
1cnr0l
md5
3959e1bfea7eb583c46970f522dca3d3
sha1
2d7d9a0f641643a0898e08146102e71b8d490ce7
sha256
3754b94abcbe93cddb308ce3b45c973e020b7105072116df9bef2034fede2101
sha512
62b4fa660bef2e6cf96e3dc34eee3a117c82cba5d49e8641db0155417ae1d2a1e6f8a9b0896de3fbbe3bf80047ae8b8cd508b8a2c8a6789e828576547b257c30
ripemd-160
36939a8802429259976100df0ea7be0c3dac415a
Diameter
163459338
Circumference
513522655.42145
Area
2.0985018325798E+16
Volume
2.2867981356352E+24
Surface area
8.3940073303192E+16
Circumference
513522655.42145
Perimeter
326918676
Area
6679738794849561
Diagonal
115583206.34806
Surface area
40078432769097366
Volume
5.4593284070951E+23
Space diagonal
141559939.19379
Perimeter
245189007
Area
2.8924117434921E+15
Altitude
70779969.596894
Surface area
2.8924117434921E+15
Volume
6.4338802289689E+22
Height
38527735.449355