128675981 is an odd 9-digits composite number following 128675980
and preceding 128675982 . In scientific notation, it is written as 1.28675981 × 10^8.
The sum of its digits is 47. It has a total of 2 prime factors and 4 positive divisors.
There are 110293692 positive integers (up to 128675981) that are relatively prime to 128675981.
128675981 has 4 divisors, whose sum is 147058272
The reverse of 128675981 is 189576821
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 47
Digital Root 2
Name
one hundred twenty-eight million six hundred seventy-five thousand nine hundred eighty-one
Scientific notation
1.28675981 × 10^8
Engineering notation
1.28675981 × 10^6
Prime Factorization
7 × 18382283
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
128675981
Product of the distinct prime numbers
The prime factorization of 128675981 is 7 × 18382283.
Since it has a total of 2 prime factors.
9 , 1 , 52 , 27 , 995 , 16 , 1852 , 5684 , 82623 , 65963 , 744831 , 76082 , 6462740 , 7077799 , 29479443 , 47445615 , 305859246 , 562831915 , 6629784527 , 8912646067
n×2
257351962
n×3
386027943
n×4
514703924
n×5
643379905
n÷2
64337990.5
n÷3
42891993.666667
n÷3
32168995.25
n÷5
25735196.2
n2
16557508086312361
n3
2.1305535959217E+24
n4
2.741510740283E+32
n5
3.5276658392795E+40
2 √n
11343.543582144
3 √n
504.85403224996
4 √n
106.50607298245
5 √n
41.869666106314
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
-128675980
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 128675981 can be divided by 4 positive divisors.
The sum of these divisors (counting 128675981) is 1, the average is 0.25.
Base
System
Value
2
Binary
111101010110111000010001101
3
Ternary
22222010102021002
4
Quaternary
13222313002031
5
Quinary
230420112411
6
Senary
20433550045
8
Octal
752670215
10
Decimal
128675981
12
Duodecimal
37115325
16
Hexadecimal
7ab708d
20
Vigesimal
20449j1
36
Base36
24lz0t
md5
86096925101c86e5987fca9fe2038318
sha1
87dedc2488fdc7979203e8d099918b9775027e67
sha256
9cd7cb305bbe53d6287d51bab9371d5442c749eb91604d4ba31b59321e023bd6
sha512
75032cf7ed2df0485b2c5c676ba051635a1e847fb73bab6c444889a0afdce5ce676c99a97e931a1e89eef3fce9716dd4cbf651b532f66fd075e4ba351a195cac
ripemd-160
6ee1f34561bd1aaef607a7645421bc75e274674c
Diameter
257351962
Circumference
808495033.20612
Area
5.2016945765713E+16
Volume
8.9244420333691E+24
Surface area
2.0806778306285E+17
Circumference
808495033.20612
Perimeter
514703924
Area
16557508086312361
Diagonal
181975317.48186
Surface area
99345048517874166
Volume
2.1305535959217E+24
Space diagonal
222873336.80577
Perimeter
386027943
Area
7.1696113130564E+15
Altitude
111436668.40288
Surface area
7.1696113130564E+15
Volume
2.5108814922627E+23
Height
60658439.160621