128021239 is an odd 9-digits composite number following 128021238
and preceding 128021240 . In scientific notation, it is written as 1.28021239 × 10^8.
The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors.
There are 127965856 positive integers (up to 128021239) that are relatively prime to 128021239.
128021239 has 4 divisors, whose sum is 128076624
The reverse of 128021239 is 932120821
Previous prime number is 2417
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 28
Digital Root 1
Name
one hundred twenty-eight million twenty-one thousand two hundred thirty-nine
Scientific notation
1.28021239 × 10^8
Engineering notation
1.28021239 × 10^6
Prime Factorization
2417 × 52967
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
128021239
Product of the distinct prime numbers
The prime factorization of 128021239 is 2417 × 52967.
Since it has a total of 2 prime factors.
8 , 4 , 23 , 19 , 211 , 750 , 2235 , 792 , 61842 , 2154 , 762085 , 944037 , 3811316 , 9998320 , 3777756 , 30583589 , 786561063 , 45346936 , 437994304 , 8013611952
n×2
256042478
n×3
384063717
n×4
512084956
n×5
640106195
n÷2
64010619.5
n÷3
42673746.333333
n÷3
32005309.75
n÷5
25604247.8
n2
16389437635095121
n3
2.0981961125581E+24
n4
2.6861366599467E+32
n5
3.438825433297E+40
2 √n
11314.647100109
3 √n
503.99629285717
4 √n
106.37032998026
5 √n
41.826970032688
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
-128021238
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 128021239 can be divided by 4 positive divisors.
The sum of these divisors (counting 128021239) is 1, the average is 0.25.
Base
System
Value
2
Binary
111101000010111001011110111
3
Ternary
22220220011010101
4
Quaternary
13220113023313
5
Quinary
230233134424
6
Senary
20411534531
8
Octal
750271367
10
Decimal
128021239
12
Duodecimal
36a5a447
16
Hexadecimal
7a172f7
20
Vigesimal
2002d1j
36
Base36
247xtj
md5
cfc3081b392952c71867dc45bc64330e
sha1
5fe11797c1e61f22d98c7e9f7f19c158e0924eee
sha256
5abb4c4b81ae8adf0a6cbb26b099d021bbcf7451b196539c46d457d9e31744bd
sha512
635de331ff16baf96ba41c113067598b4876bd7467602631bcc4ea22273375ae4c514450ccf22a21f771088bc5d61b93951dc6323cebc47c01517e5c8f9bf631
ripemd-160
c198db60f02f1f917d54cec09d206e10e017ed7d
Diameter
256042478
Circumference
804381167.89173
Area
5.1488936870883E+16
Volume
8.7889033240043E+24
Surface area
2.0595574748353E+17
Circumference
804381167.89173
Perimeter
512084956
Area
16389437635095121
Diagonal
181049372.46561
Surface area
98336625810570726
Volume
2.0981961125581E+24
Space diagonal
221739290.39592
Perimeter
384063717
Area
7.0968346728666E+15
Altitude
110869645.19796
Surface area
7.0968346728666E+15
Volume
2.4727478324152E+23
Height
60349790.821869