128542938 is an even 9-digits composite number following 128542937
and preceding 128542939 . In scientific notation, it is written as 1.28542938 × 10^8.
The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors.
There are 42847644 positive integers (up to 128542938) that are relatively prime to 128542938.
128542938 has 8 divisors, whose sum is 257085888
The reverse of 128542938 is 839245821
Previous prime number is 3
Is Prime? no
Number parity even
Number length 9
Sum of Digits 42
Digital Root 6
Name
one hundred twenty-eight million five hundred forty-two thousand nine hundred thirty-eight
Scientific notation
1.28542938 × 10^8
Engineering notation
1.28542938 × 10^6
Prime Factorization
2 × 3 × 21423823
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
128542938
Product of the distinct prime numbers
The prime factorization of 128542938 is 2 × 3 × 21423823.
Since it has a total of 3 prime factors.
7 , 10 , 55 , 7 , 514 , 259 , 5893 , 3578 , 21684 , 7223 , 92341 , 670616 , 1094982 , 6686381 , 25169709 , 27983411 , 710793386 , 792401988 , 886532794 , 2042406601
n×2
257085876
n×3
385628814
n×4
514171752
n×5
642714690
n÷2
64271469
n÷3
42847646
n÷3
32135734.5
n÷5
25708587.6
n2
16523286909671844
n3
2.1239518447862E+24
n4
2.7301901029933E+32
n5
3.5094665713729E+40
2 √n
11337.677804559
3 √n
504.67997630795
4 √n
106.47853213
5 √n
41.861004394654
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
-128542937
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 128542938 can be divided by 8 positive divisors.
The sum of these divisors (counting 128542938) is 1, the average is 0.125.
Base
System
Value
2
Binary
111101010010110100011011010
3
Ternary
22221212122202120
4
Quaternary
13222112203122
5
Quinary
230401333223
6
Senary
20431042110
8
Octal
752264332
10
Decimal
128542938
12
Duodecimal
37070336
16
Hexadecimal
7a968da
20
Vigesimal
2037h6i
36
Base36
24j4d6
md5
2feaeb1a6ff6b68615c4a6dbc997a30e
sha1
8ffdb376099f491e0343190f56c1f8ea46acfc19
sha256
833a5a6c80eab3a5fc5a738c3c78177bf8e9e6bcc061643b3c3ae48d6f0a2a74
sha512
4e3d42093437c3d1fd8e8f866c9e1830ffde1f0b6c9766961973e40d0712a60888897f5f58f499144df88c5690683cc71fce0c65e969ea40e714197410e843fc
ripemd-160
cfd8aad6b0f43f18d4aebd37f40b4ad7860d591c
Diameter
257085876
Circumference
807659099.3833
Area
5.1909436768581E+16
Volume
8.8967886828782E+24
Surface area
2.0763774707433E+17
Circumference
807659099.3833
Perimeter
514171752
Area
16523286909671844
Diagonal
181787166.26688
Surface area
99139721458031064
Volume
2.1239518447862E+24
Space diagonal
222642899.57018
Perimeter
385628814
Area
7.1547931088973E+15
Altitude
111321449.78509
Surface area
7.1547931088973E+15
Volume
2.5031012539366E+23
Height
60595722.088961