128207855 is an odd 9-digits composite number following 128207854
and preceding 128207856 . In scientific notation, it is written as 1.28207855 × 10^8.
The sum of its digits is 38. It has a total of 3 prime factors and 8 positive divisors.
There are 101992576 positive integers (up to 128207855) that are relatively prime to 128207855.
128207855 has 8 divisors, whose sum is 154710000
The reverse of 128207855 is 558702821
Previous prime number is 179
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 38
Digital Root 2
Name
one hundred twenty-eight million two hundred seven thousand eight hundred fifty-five
Scientific notation
1.28207855 × 10^8
Engineering notation
1.28207855 × 10^6
Prime Factorization
5 × 179 × 143249
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
128207855
Product of the distinct prime numbers
The prime factorization of 128207855 is 5 × 179 × 143249.
Since it has a total of 3 prime factors.
7 , 8 , 29 , 52 , 76 , 434 , 6479 , 8232 , 65572 , 3593 , 749943 , 327795 , 9107656 , 3338338 , 86317857 , 1392718 , 351760046 , 92722513 , 6448289331 , 6317960164
n×2
256415710
n×3
384623565
n×4
512831420
n×5
641039275
n÷2
64103927.5
n÷3
42735951.666667
n÷3
32051963.75
n÷5
25641571
n2
16437254083701025
n3
2.1073850881613E+24
n4
2.7018332181215E+32
n5
3.463962414631E+40
2 √n
11322.890752807
3 √n
504.24106502494
4 √n
106.40907269969
5 √n
41.839157126974
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
-128207854
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 128207855 can be divided by 8 positive divisors.
The sum of these divisors (counting 128207855) is 1, the average is 0.125.
Base
System
Value
2
Binary
111101001000100101111101111
3
Ternary
22221020122010002
4
Quaternary
13221010233233
5
Quinary
230310122410
6
Senary
20415534515
8
Octal
751045757
10
Decimal
128207855
12
Duodecimal
36b2a43b
16
Hexadecimal
7a44bef
20
Vigesimal
2015jcf
36
Base36
24bxtb
md5
8bfb4c0812f2d857ca53f8c9fe72f7ec
sha1
75226ef045573e330e20f9ccf003694eb4642e45
sha256
f2d155126f844bc2542223897f8e40570059255094ef8f0426b2e1e57a4081c2
sha512
a974035fa6bb3a403c8a0416cbe08ff98cecb7ac422d38da7ae7cebaa309fd9c9c1f758c0e35855813933a5a8020045c608057b4cf5b82448c3d73962910e19a
ripemd-160
57e5fc9d6d94a0448974635a87db239d48246c35
Diameter
256415710
Circumference
805553710.80101
Area
5.1639156674544E+16
Volume
8.827394015003E+24
Surface area
2.0655662669818E+17
Circumference
805553710.80101
Perimeter
512831420
Area
16437254083701025
Diagonal
181313287.34376
Surface area
98623524502206150
Volume
2.1073850881613E+24
Space diagonal
222062518.78942
Perimeter
384623565
Area
7.1175398024723E+15
Altitude
111031259.39471
Surface area
7.1175398024723E+15
Volume
2.4835771440171E+23
Height
60437762.447921