128439457 is an odd 9-digits composite number following 128439456
and preceding 128439458 . In scientific notation, it is written as 1.28439457 × 10^8.
The sum of its digits is 43. It has a total of 2 prime factors and 4 positive divisors.
There are 128283696 positive integers (up to 128439457) that are relatively prime to 128439457.
128439457 has 4 divisors, whose sum is 128595220
The reverse of 128439457 is 754934821
Previous prime number is 829
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 43
Digital Root 7
Name
one hundred twenty-eight million four hundred thirty-nine thousand four hundred fifty-seven
Scientific notation
1.28439457 × 10^8
Engineering notation
1.28439457 × 10^6
Prime Factorization
829 × 154933
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
128439457
Product of the distinct prime numbers
The prime factorization of 128439457 is 829 × 154933.
Since it has a total of 2 prime factors.
4 , 2 , 79 , 83 , 95 , 239 , 1303 , 3438 , 14234 , 35646 , 507186 , 20128 , 1031145 , 1361067 , 7399295 , 21638363 , 12706693 , 148341544 , 8683864560 , 2016271173
n×2
256878914
n×3
385318371
n×4
513757828
n×5
642197285
n÷2
64219728.5
n÷3
42813152.333333
n÷3
32109864.25
n÷5
25687891.4
n2
16496694114454849
n3
2.1188264343557E+24
n4
2.7214091670589E+32
n5
3.4953631569187E+40
2 √n
11333.113296884
3 √n
504.54451234056
4 √n
106.45709603819
5 √n
41.854262345288
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
-128439456
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 128439457 can be divided by 4 positive divisors.
The sum of these divisors (counting 128439457) is 1, the average is 0.25.
Base
System
Value
2
Binary
111101001111101010010100001
3
Ternary
22221200101210221
4
Quaternary
13221331102201
5
Quinary
230340030312
6
Senary
20424523041
8
Octal
751752241
10
Decimal
128439457
12
Duodecimal
37020481
16
Hexadecimal
7a7d4a1
20
Vigesimal
202eich
36
Base36
24gwip
md5
e434fef9b4192b6cf9feb42540231a73
sha1
279442658af81238760b8316d669c77eb89e8889
sha256
2726edd9d1dd72a1d6a99042a25f32a425b041a14e15efb06a77fea86820fe1d
sha512
fdceaacdb35c2496c99f0ca7bea669123f0cedaa3d57b976f9c334f3338b5b67caeecefe9d05e1bb8216812a30619ae2c53464e23e7e622601c8e13c2b79caa9
ripemd-160
fb68fe70ec4fd14711c419999bda67e62ce9ddf6
Diameter
256878914
Circumference
807008909.08452
Area
5.1825893038489E+16
Volume
8.8753194138715E+24
Surface area
2.0730357215396E+17
Circumference
807008909.08452
Perimeter
513757828
Area
16496694114454849
Diagonal
181640822.03324
Surface area
98980164686729094
Volume
2.1188264343557E+24
Space diagonal
222463665.22056
Perimeter
385318371
Area
7.1432780907896E+15
Altitude
111231832.61028
Surface area
7.1432780907896E+15
Volume
2.497060899817E+23
Height
60546940.677745