81707091 is an odd 8-digits composite number following 81707090
and preceding 81707092 . In scientific notation, it is written as 8.1707091 × 10^7.
The sum of its digits is 33. It has a total of 3 prime factors and 8 positive divisors.
There are 54449640 positive integers (up to 81707091) that are relatively prime to 81707091.
81707091 has 8 divisors, whose sum is 108986304
The reverse of 81707091 is 19070718
Previous prime number is 3907
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6
Name
eighty-one million seven hundred seven thousand ninety-one
Scientific notation
8.1707091 × 10^7
Engineering notation
8.1707091 × 10^6
Prime Factorization
3 × 3907 × 6971
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81707091
Product of the distinct prime numbers
The prime factorization of 81707091 is 3 × 3907 × 6971.
Since it has a total of 3 prime factors.
7 , 10 , 54 , 27 , 178 , 414 , 9748 , 3864 , 96144 , 45545 , 677278 , 479197 , 759521 , 5625008 , 48951758 , 21936255 , 374078354 , 830199992 , 3475692752 , 5073443598
n×2
163414182
n×3
245121273
n×4
326828364
n×5
408535455
n÷2
40853545.5
n÷3
27235697
n÷3
20426772.75
n÷5
16341418.2
n2
6676048719682281
n3
5.4548052025951E+23
n4
4.4569626507571E+31
n5
3.6416545288902E+39
2 √n
9039.19747544
3 √n
433.93023965992
4 √n
95.07469419062
5 √n
38.2341949073
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
-81707090
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 81707091 can be divided by 8 positive divisors.
The sum of these divisors (counting 81707091) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110111101100000001010011
3
Ternary
12200202011001120
4
Quaternary
10313230001103
5
Quinary
131404111331
6
Senary
12035133323
8
Octal
467540123
10
Decimal
81707091
12
Duodecimal
23444243
16
Hexadecimal
4dec053
20
Vigesimal
15ad7eb
36
Base36
1cn9lf
md5
759e7fe711e88749174014a385cd646c
sha1
13046f5f12654e5bc2733241d59c56e625a0daf6
sha256
403d5d0d559254bda39958f63c29848c52ca15e8db0d6dfd4cacf7b89c6f699e
sha512
4aba0a92ef4ecdf1a8148daeaf63122a2d6a16a037af3a902a0b5fcd5b161dfa75d71f2f06011c3cbe280f548b0a984b7b2855c022616402eae4c1ec24b5b2c9
ripemd-160
c3d03a899724e90d10130bef199a9a8766a0a0bf
Diameter
163414182
Circumference
513380793.66359
Area
2.0973425612761E+16
Volume
2.2849034601648E+24
Surface area
8.3893702451046E+16
Circumference
513380793.66359
Perimeter
326828364
Area
6676048719682281
Diagonal
115551276.23425
Surface area
40056292318093686
Volume
5.4548052025951E+23
Space diagonal
141520832.95065
Perimeter
245121273
Area
2.8908138940737E+15
Altitude
70760416.475327
Surface area
2.8908138940737E+15
Volume
6.4285495813445E+22
Height
38517092.078084