128972642 is an even 9-digits composite number following 128972641
and preceding 128972643 . In scientific notation, it is written as 1.28972642 × 10^8.
The sum of its digits is 41. It has a total of 3 prime factors and 8 positive divisors.
There are 60692992 positive integers (up to 128972642) that are relatively prime to 128972642.
128972642 has 8 divisors, whose sum is 204838956
The reverse of 128972642 is 246279821
Previous prime number is 17
Is Prime? no
Number parity even
Number length 9
Sum of Digits 41
Digital Root 5
Name
one hundred twenty-eight million nine hundred seventy-two thousand six hundred forty-two
Scientific notation
1.28972642 × 10^8
Engineering notation
1.28972642 × 10^6
Prime Factorization
2 × 17 × 3793313
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
128972642
Product of the distinct prime numbers
The prime factorization of 128972642 is 2 × 17 × 3793313.
Since it has a total of 3 prime factors.
5 , 8 , 53 , 53 , 288 , 524 , 533 , 222 , 28422 , 16374 , 691027 , 118107 , 5383929 , 6234793 , 15196186 , 98300985 , 486117306 , 183585209 , 2191984371 , 7987598265
n×2
257945284
n×3
386917926
n×4
515890568
n×5
644863210
n÷2
64486321
n÷3
42990880.666667
n÷3
32243160.5
n÷5
25794528.4
n2
16633942384460164
n3
2.1453234961996E+24
n4
2.7668803924954E+32
n5
3.5685187431813E+40
2 √n
11356.612258944
3 √n
505.24171286715
4 √n
106.56740711373
5 √n
41.888954334096
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
-128972641
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 128972642 can be divided by 8 positive divisors.
The sum of these divisors (counting 128972642) is 1, the average is 0.125.
Base
System
Value
2
Binary
111101011111111011101100010
3
Ternary
22222200111012112
4
Quaternary
13223333131202
5
Quinary
231004111032
6
Senary
20444155322
8
Octal
753773542
10
Decimal
128972642
12
Duodecimal
37238b42
16
Hexadecimal
7aff762
20
Vigesimal
2061bc2
36
Base36
24sbxe
md5
cc0d522e0011fef0f9eae1d68cdfc10d
sha1
79de42f1ec01ec0ce8c8d7e148f06a9fb4ab1386
sha256
af73fa45b0187ca83c8d661c3730d493510b2102f30f05d9ee361f564921aaf2
sha512
5e9085a07cee94c408bd24e2d31a969ad17e5dcdd03a2b4d326e255fc218c512d87eb809f84470c8dea8cfbba82ac159c08b929114b05c8f6059123185ce31d8
ripemd-160
966dbc0acbbce2be084296be15415fd19e1293e9
Diameter
257945284
Circumference
810359009.24253
Area
5.2257071195256E+16
Volume
8.986310046979E+24
Surface area
2.0902828478102E+17
Circumference
810359009.24253
Perimeter
515890568
Area
16633942384460164
Diagonal
182394859.49149
Surface area
99803654306760984
Volume
2.1453234961996E+24
Space diagonal
223387168.73039
Perimeter
386917926
Area
7.2027083350146E+15
Altitude
111693584.3652
Surface area
7.2027083350146E+15
Volume
2.5282879866693E+23
Height
60798286.497163