128439218 is an even 9-digits composite number following 128439217
and preceding 128439219 . In scientific notation, it is written as 1.28439218 × 10^8.
The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors.
There are 64219608 positive integers (up to 128439218) that are relatively prime to 128439218.
128439218 has 4 divisors, whose sum is 192658830
The reverse of 128439218 is 812934821
Previous prime number is 2
Is Prime? no Number parity even Number length 9 Sum of Digits 38 Digital Root 2
Name
one hundred twenty-eight million four hundred thirty-nine thousand two hundred eighteen
Scientific notation
1.28439218 × 10^8
Engineering notation
1.28439218 × 10^6
Prime Factorization
2 × 64219609
Composite number
ω Distinct Factors
2 Total number of distinct prime factors
Ω Total Factors
2 Total number of prime factors
rad Radical
128439218 Product of the distinct prime numbers
The prime factorization of 128439218 is 2 × 64219609.
Since it has a total of 2 prime factors.
5 , 3 , 46 , 34 , 144 , 248 , 1952 , 6732 , 55524 , 75759 , 769819 , 742669 , 9697543 , 5159099 , 20810185 , 41287054 , 906153171 , 90257619 , 222392010 , 8480449857
n×2
256878436
n×3
385317654
n×4
513756872
n×5
642196090
n÷2
64219609
n÷3
42813072.666667
n÷3
32109804.5
n÷5
25687843.6
n2
16496632720451524
n3
2.118814606248E+24
n4
2.7213889111347E+32
n5
3.4953306362001E+40
2 √n11333.102752556
3 √n504.54419938841
4 √n106.45704651434
5 √n41.854246768803
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
-128439217 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 128439218 can be divided by 4 positive divisors.
The sum of these divisors (counting 128439218) is 1, the average is 0.25.
Base
System
Value
2
Binary
111101001111101001110110010
3
Ternary
22221200101111002
4
Quaternary
13221331032302
5
Quinary
230340023333
6
Senary
20424522002
8
Octal
751751662
10
Decimal
128439218
12
Duodecimal
37020302
16
Hexadecimal
7a7d3b2
20
Vigesimal
202ei0i
36
Base36
24gwc2
md5
2d95b027231fd5636db3803a7edd00ed
sha1
e50ca6cfe15483b7b4705257c8395d9db6f5a63b
sha256
22c3bc55148e032f1defba198311850283b1ba93d2e9abcd01b84f69216cce17
sha512
e47afce60f3a69f7d0841cd49fb4d30d1b3fb84691e8cec802e1d70b00f4ab94352efa83deebb1caa27fc3fa95c6a589a6164c47b28447610dece118d1d8fcad
ripemd-160
576827239c5075305339d0ed339970e1d8e443bf
Diameter
256878436
Circumference
807007407.40324
Area
5.182570016354E+16
Volume
8.87526986841E+24
Surface area
2.0730280065416E+17
Circumference
807007407.40324
Perimeter
513756872
Area
16496632720451524
Diagonal
181640484.03619
Surface area
98979796322709144
Volume
2.118814606248E+24
Space diagonal
222463251.26042
Perimeter
385317654
Area
7.1432515064063E+15
Altitude
111231625.63021
Surface area
7.1432515064063E+15
Volume
2.4970469602584E+23
Height
60546828.012065