68181531 is an odd 8-digits composite number following 68181530
and preceding 68181532 . In scientific notation, it is written as 6.8181531 × 10^7.
The sum of its digits is 33. It has a total of 3 prime factors and 8 positive divisors.
There are 40360320 positive integers (up to 68181531) that are relatively prime to 68181531.
68181531 has 8 divisors, whose sum is 91102800
The reverse of 68181531 is 13518186
Previous prime number is 473
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6
Name
sixty-eight million one hundred eighty-one thousand five hundred thirty-one
Scientific notation
6.8181531 × 10^7
Engineering notation
6.8181531 × 10^6
Prime Factorization
3 × 473 × 48049
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
68181531
Product of the distinct prime numbers
The prime factorization of 68181531 is 3 × 473 × 48049.
Since it has a total of 3 prime factors.
4 , 6 , 21 , 65 , 181 , 949 , 8397 , 7881 , 66757 , 11280 , 472524 , 741178 , 4527391 , 2425821 , 40668196 , 9938827 , 524815239 , 606434469 , 3183938175 , 6160307386
n×2
136363062
n×3
204544593
n×4
272726124
n×5
340907655
n÷2
34090765.5
n÷3
22727177
n÷3
17045382.75
n÷5
13636306.2
n2
4648721169503961
n3
3.1695692652889E+23
n4
2.1610608511794E+31
n5
1.4734443741758E+39
2 √n
8257.2108487067
3 √n
408.52839674614
4 √n
90.869196368774
5 √n
36.875112147278
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
-68181530
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 68181531 can be divided by 8 positive divisors.
The sum of these divisors (counting 68181531) is 1, the average is 0.125.
Base
System
Value
2
Binary
100000100000101111000011011
3
Ternary
11202021222110220
4
Quaternary
10010011320123
5
Quinary
114423302111
6
Senary
10433211123
8
Octal
404057033
10
Decimal
68181531
12
Duodecimal
1aa00aa3
16
Hexadecimal
4105e1b
20
Vigesimal
1162dgb
36
Base36
14ld7f
md5
f5d93d7a143b0cc1b951d61f88922747
sha1
708967266b21f58c3d0447db9e0b22845196fa14
sha256
deec87f5610a36a88c8779778eebf90529dc0061fe3816c89827d68483b3d4f1
sha512
a176052ec049b434b2b2e0312d3a56f2557d53b3ffced00189e36967c38403ab707f4d37c415a26b85dba0076ba8e661da463fac5fa6615b41c0dc2aae69783c
ripemd-160
c13fef1bc07317b2c1c0303d5ec5ae615c004021
Diameter
136363062
Circumference
428397193.80021
Area
1.4604388274701E+16
Volume
1.3276660691834E+24
Surface area
5.8417553098804E+16
Circumference
428397193.80021
Perimeter
272726124
Area
4648721169503961
Diagonal
96423245.843562
Surface area
27892327017023766
Volume
3.1695692652889E+23
Space diagonal
118093875.82983
Perimeter
204544593
Area
2.0129553139505E+15
Altitude
59046937.914916
Surface area
2.0129553139505E+15
Volume
3.7353732015437E+22
Height
32141081.947854