81129626 is an even 8-digits composite number following 81129625
and preceding 81129627 . In scientific notation, it is written as 8.1129626 × 10^7.
The sum of its digits is 35. It has a total of 2 prime factors and 4 positive divisors.
There are 40564812 positive integers (up to 81129626) that are relatively prime to 81129626.
81129626 has 4 divisors, whose sum is 121694442
The reverse of 81129626 is 62692118
Previous prime number is 2
Is Prime? no
Number parity even
Number length 8
Sum of Digits 35
Digital Root 8
Name
eighty-one million one hundred twenty-nine thousand six hundred twenty-six
Scientific notation
8.1129626 × 10^7
Engineering notation
8.1129626 × 10^6
Prime Factorization
2 × 40564813
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81129626
Product of the distinct prime numbers
The prime factorization of 81129626 is 2 × 40564813.
Since it has a total of 2 prime factors.
5 , 7 , 96 , 74 , 896 , 996 , 4678 , 7643 , 20535 , 89246 , 836503 , 427741 , 2620289 , 5442923 , 31059939 , 99933776 , 557320055 , 827070918 , 4630685193 , 2253775904
n×2
162259252
n×3
243388878
n×4
324518504
n×5
405648130
n÷2
40564813
n÷3
27043208.666667
n÷3
20282406.5
n÷5
16225925.2
n2
6582016214899876
n3
5.3399651384076E+23
n4
4.3322937453205E+31
n5
3.5147737127999E+39
2 √n
9007.1985655919
3 √n
432.9055543059
4 √n
94.906261993568
5 √n
38.179997426571
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81129625
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81129626 can be divided by 4 positive divisors.
The sum of these divisors (counting 81129626) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110101011111000010011010
3
Ternary
12122122210220222
4
Quaternary
10311133002122
5
Quinary
131232122001
6
Senary
12014520042
8
Octal
465370232
10
Decimal
81129626
12
Duodecimal
23206022
16
Hexadecimal
4d5f09a
20
Vigesimal
1571416
36
Base36
1caw0q
md5
5499110f1eee9cd387fcdc2c9c6726ba
sha1
9711bbd1cc7b0a0f285953cde121ba43d179b65d
sha256
1dc305d584792d0cab7ef28c23d58fd9b090d4327d459084b36d1d1a71e8d432
sha512
1e6cb0ba58b0cad6a94b823acc0fa830b26b036fdfdba9e5e11273fa2182acc9999ad0f5a9313247ed5d6baf2d6137aa348c0c8b905e8aa0af149c7d053bc058
ripemd-160
8d0a6f13cf0e946a6f2032dad681f6bedb60c699
Diameter
162259252
Circumference
509752474.06017
Area
2.0678013786538E+16
Volume
2.2367993665663E+24
Surface area
8.2712055146153E+16
Circumference
509752474.06017
Perimeter
324518504
Area
6582016214899876
Diagonal
114734617.39946
Surface area
39492097289399256
Volume
5.3399651384076E+23
Space diagonal
140520634.23106
Perimeter
243388878
Area
2.8500966251122E+15
Altitude
70260317.11553
Surface area
2.8500966251122E+15
Volume
6.2932092677797E+22
Height
38244872.466486