128818 is an even 6-digits composite number following 128817
and preceding 128819 . In scientific notation, it is written as 1.28818 × 10^5.
The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors.
There are 62160 positive integers (up to 128818) that are relatively prime to 128818.
128818 has 8 divisors, whose sum is 199980
The reverse of 128818 is 818821
Previous prime number is 29
Is Prime? no
Number parity even
Number length 6
Sum of Digits 28
Digital Root 1
Name
one hundred twenty-eight thousand eight hundred eighteen
Scientific notation
1.28818 × 10^5
Engineering notation
1.28818 × 10^3
Prime Factorization
2 × 29 × 2221
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
128818
Product of the distinct prime numbers
The prime factorization of 128818 is 2 × 29 × 2221.
Since it has a total of 3 prime factors.
6 , 2 , 17 , 41 , 586 , 453 , 8801 , 4133 , 99278 , 76961 , 95154 , 571721 , 5239613 , 5517744 , 18891122 , 14489574 , 840087418 , 335060816 , 6177991360 , 2881043394
n×2
257636
n×3
386454
n×4
515272
n×5
644090
n÷2
64409
n÷3
42939.333333333
n÷3
32204.5
n÷5
25763.6
n2
16594077124
n3
2137615826959432
n4
2.7536339559726E+20
n5
3.5471761894048E+25
2 √n
358.912245542
3 √n
50.503969886913
4 √n
18.944979428387
5 √n
10.519505146406
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
-128817
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 128818 can be divided by 8 positive divisors.
The sum of these divisors (counting 128818) is 1, the average is 0.125.
Base
System
Value
2
Binary
11111011100110010
3
Ternary
20112201001
4
Quaternary
133130302
5
Quinary
13110233
6
Senary
2432214
8
Octal
373462
10
Decimal
128818
12
Duodecimal
6266a
16
Hexadecimal
1f732
20
Vigesimal
g20i
36
Base36
2rea
md5
acb08455e1616053523772c2517387b2
sha1
3054fd326c065714fcce6421b8918ccd05027b5b
sha256
393044c35bbf3e0acc00b2ac07a5a4c00f549ec575ab73d53e0c40669b63bb46
sha512
b7731ccd79d1079c22b2f857b9342dc9e9060564bbffaa57851427e40c83d2931761f9c9b8e8600fccf60da43ee72c074df4b11dc7709ec3be15af33284da787
ripemd-160
e6495fc4e44524e56bc8e724c07730aba4eaf9ea
Diameter
257636
Circumference
809387.36490026
Area
52131830785.861
Volume
8.954024237564E+15
Surface area
208527323143.44
Circumference
809387.36490026
Perimeter
515272
Area
16594077124
Diagonal
182176.16267778
Surface area
99564462744
Volume
2137615826959432
Space diagonal
223119.32092941
Perimeter
386454
Area
7185446170.8711
Altitude
111559.6604647
Surface area
7185446170.8711
Volume
2.5192044113578E+14
Height
60725.387559259