129728431 is an odd 9-digits composite number following 129728430
and preceding 129728432 . In scientific notation, it is written as 1.29728431 × 10^8.
The sum of its digits is 37. It has a total of 5 prime factors and 20 positive divisors.
There are 109485600 positive integers (up to 129728431) that are relatively prime to 129728431.
129728431 has 20 divisors, whose sum is 153674064
The reverse of 129728431 is 134827921
Previous prime number is 71
Is Prime? no Number parity odd Number length 9 Sum of Digits 37 Digital Root 1
Name
one hundred twenty-nine million seven hundred twenty-eight thousand four hundred thirty-one
Scientific notation
1.29728431 × 10^8
Engineering notation
1.29728431 × 10^6
Prime Factorization
7 × 7 × 49 × 71 × 761
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
5 Total number of prime factors
rad Radical
18532633 Product of the distinct prime numbers
The prime factorization of 129728431 is 7 × 7 × 49 × 71 × 761.
Since it has a total of 5 prime factors.
8 , 4 , 5 , 36 , 360 , 829 , 4964 , 722 , 60318 , 26701 , 916386 , 396082 , 7470093 , 7235837 , 98565692 , 59617621 , 927762353 , 259586947 , 7407212638 , 7089551200
n×2
259456862
n×3
389185293
n×4
518913724
n×5
648642155
n÷2
64864215.5
n÷3
43242810.333333
n÷3
32432107.75
n÷5
25945686.2
n2
16829465809721761
n3
2.1832601940633E+24
n4
2.8323091944059E+32
n5
3.6743102789716E+40
2 √n11389.838936526
3 √n506.22670896251
4 √n106.72318837313
5 √n41.937934117982
1 , 7 , 49 , 71 , 343 , 497 , 761 , 2401 , 3479 , 5327 , 24353 , 37289 , 54031 , 170471 , 261023 , 378217 , 1827161 , 2647519 , 18532633 , 129728431
20 divisors
τ Total Divisors
20 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-129728430 Sum of the proper positive divisors of n
A Arithmetic Mean
0.05 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
20 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 129728431 can be divided by 20 positive divisors.
The sum of these divisors (counting 129728431) is 1, the average is 0.05.
Base
System
Value
2
Binary
111101110110111111110101111
3
Ternary
100001002212221201
4
Quaternary
13232313332233
5
Quinary
231202302211
6
Senary
20512310331
8
Octal
756677657
10
Decimal
129728431
12
Duodecimal
375423a7
16
Hexadecimal
7bb7faf
20
Vigesimal
20ag11b
36
Base36
258j3j
md5
7d1dcaba01a44788105895e246a1397c
sha1
a2cfbc428fc269f8738baf99b2743ab1ce077700
sha256
06b6e8076784701dbe07e02a715e887415ea82319626745ebb00c5d7a9356368
sha512
00c5863f142074f553ecd04ee084d19416fbbc8ebf6efc8c8b044977f6a742b904dcd93b025e7d26ce34491ae897002f8aa1640a10ff6569a74ea1cd7ae5930b
ripemd-160
89a3c66bad948054e4b8121c1b36e89f2a62c8fb
Diameter
259456862
Circumference
815107771.58266
Area
5.2871326151662E+16
Volume
9.1452189153926E+24
Surface area
2.1148530460665E+17
Circumference
815107771.58266
Perimeter
518913724
Area
16829465809721761
Diagonal
183463706.54558
Surface area
100976794858330566
Volume
2.1832601940633E+24
Space diagonal
224696233.67819
Perimeter
389185293
Area
7.2873724616703E+15
Altitude
112348116.8391
Surface area
7.2873724616703E+15
Volume
2.5729968138614E+23
Height
61154568.848527