129721639 is an odd 9-digits composite number following 129721638
and preceding 129721640 . In scientific notation, it is written as 1.29721639 × 10^8.
The sum of its digits is 40. It has a total of 2 prime factors and 4 positive divisors.
There are 125537040 positive integers (up to 129721639) that are relatively prime to 129721639.
129721639 has 4 divisors, whose sum is 133906240
The reverse of 129721639 is 936127921
Previous prime number is 31
Is Prime? no Number parity odd Number length 9 Sum of Digits 40 Digital Root 4
Name
one hundred twenty-nine million seven hundred twenty-one thousand six hundred thirty-nine
Scientific notation
1.29721639 × 10^8
Engineering notation
1.29721639 × 10^6
Prime Factorization
31 × 4184569
Composite number
ω Distinct Factors
2 Total number of distinct prime factors
Ω Total Factors
2 Total number of prime factors
rad Radical
129721639 Product of the distinct prime numbers
The prime factorization of 129721639 is 31 × 4184569.
Since it has a total of 2 prime factors.
2 , 10 , 31 , 56 , 577 , 64 , 9490 , 7902 , 14294 , 47831 , 622525 , 874687 , 234537 , 9666387 , 68688986 , 16735811 , 482337952 , 118090334 , 1134309040 , 3710029289
n×2
259443278
n×3
389164917
n×4
518886556
n×5
648608195
n÷2
64860819.5
n÷3
43240546.333333
n÷3
32430409.75
n÷5
25944327.8
n2
16827703624846321
n3
2.1829172948213E+24
n4
2.8317160928567E+32
n5
3.6733485274804E+40
2 √n11389.540772129
3 √n506.21787422009
4 √n106.72179145858
5 √n41.937494972281
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
-129721638 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 129721639 can be divided by 4 positive divisors.
The sum of these divisors (counting 129721639) is 1, the average is 0.25.
Base
System
Value
2
Binary
111101110110110010100100111
3
Ternary
100001002112122011
4
Quaternary
13232312110213
5
Quinary
231202043024
6
Senary
20512215051
8
Octal
756662447
10
Decimal
129721639
12
Duodecimal
3753a487
16
Hexadecimal
7bb6527
20
Vigesimal
20af41j
36
Base36
258duv
md5
e4cb78094939946daf9e46ba48f801dd
sha1
74368dcb047bef2dc32d4afde5d8e5d831723c6f
sha256
c6e9fa3388437c49141b17924dc408bef765b0c447912836d8b645410a7e7085
sha512
3882ef0aab8ee62b7a5901fc09d04506ee7f4e6a95662595afa6e165a202b5c827690672461388377a4587304fc9615833b2c2ecf04c92b22787fc0e51231eff
ripemd-160
3370eceac67c57b0cf2b01bcf7d16859f40b06fb
Diameter
259443278
Circumference
815065096.18805
Area
5.2865790084604E+16
Volume
9.1437825824063E+24
Surface area
2.1146316033841E+17
Circumference
815065096.18805
Perimeter
518886556
Area
16827703624846321
Diagonal
183454101.20707
Surface area
100966221749077926
Volume
2.1829172948213E+24
Space diagonal
224684469.58911
Perimeter
389164917
Area
7.2866094132362E+15
Altitude
112342234.79455
Surface area
7.2866094132362E+15
Volume
2.5725927032292E+23
Height
61151367.069022