81708613 is an odd 8-digits composite number following 81708612
and preceding 81708614 . In scientific notation, it is written as 8.1708613 × 10^7.
The sum of its digits is 34. It has a total of 4 prime factors and 16 positive divisors.
There are 64304640 positive integers (up to 81708613) that are relatively prime to 81708613.
81708613 has 16 divisors, whose sum is 101291904
The reverse of 81708613 is 31680718
Previous prime number is 41
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
eighty-one million seven hundred eight thousand six hundred thirteen
Scientific notation
8.1708613 × 10^7
Engineering notation
8.1708613 × 10^6
Prime Factorization
17 × 7 × 41 × 16747
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
81708613
Product of the distinct prime numbers
The prime factorization of 81708613 is 17 × 7 × 41 × 16747.
Since it has a total of 4 prime factors.
2 , 8 , 67 , 64 , 125 , 112 , 9174 , 2786 , 1502 , 25337 , 365114 , 377359 , 5746736 , 9704282 , 53616330 , 61456296 , 413139820 , 430118422 , 8318064911 , 5874285117
n×2
163417226
n×3
245125839
n×4
326834452
n×5
408543065
n÷2
40854306.5
n÷3
27236204.333333
n÷3
20427153.25
n÷5
16341722.6
n2
6676297438383769
n3
5.4551100366579E+23
n4
4.457294748577E+31
n5
3.6419937163841E+39
2 √n
9039.2816639377
3 √n
433.93293399042
4 √n
95.075136938832
5 √n
38.234337347841
1 , 7 , 17 , 41 , 119 , 287 , 697 , 4879 , 16747 , 117229 , 284699 , 686627 , 1992893 , 4806389 , 11672659 , 81708613
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
-81708612
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 81708613 can be divided by 16 positive divisors.
The sum of these divisors (counting 81708613) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100110111101100011001000101
3
Ternary
12200202020010221
4
Quaternary
10313230121011
5
Quinary
131404133423
6
Senary
12035144341
8
Octal
467543105
10
Decimal
81708613
12
Duodecimal
234450b1
16
Hexadecimal
4dec645
20
Vigesimal
15adbad
36
Base36
1cnarp
md5
e354f1e3d22609ebae144c4d5ee789d0
sha1
633b933f45dca89d5d111a788ca9c36d67047b49
sha256
aaa22de022085e4c8bbbc9ca24c98e7e1d8f823724eecb8bb1a7ade1767824f2
sha512
f9d6a7971c86a5df190b0c89f061848976b748255fde8725b88191c032c0f7c178cf6f18b4d1d702c465344b6c736231844d9a8b99c109659efbe5159393613a
ripemd-160
3adbcc4866f0ecdae7f361272aba3e3fb656f893
Diameter
163417226
Circumference
513390356.67162
Area
2.0974206985607E+16
Volume
2.2850311487585E+24
Surface area
8.3896827942427E+16
Circumference
513390356.67162
Perimeter
326834452
Area
6676297438383769
Diagonal
115553428.66729
Surface area
40057784630302614
Volume
5.4551100366579E+23
Space diagonal
141523469.13198
Perimeter
245125839
Area
2.8909215924307E+15
Altitude
70761734.565991
Surface area
2.8909215924307E+15
Volume
6.4289088317327E+22
Height
38517809.555765