129856821 is an odd 9-digits composite number following 129856820
and preceding 129856822 . In scientific notation, it is written as 1.29856821 × 10^8.
The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors.
There are 86092560 positive integers (up to 129856821) that are relatively prime to 129856821.
129856821 has 8 divisors, whose sum is 174099744
The reverse of 129856821 is 128658921
Previous prime number is 181
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 42
Digital Root 6
Name
one hundred twenty-nine million eight hundred fifty-six thousand eight hundred twenty-one
Scientific notation
1.29856821 × 10^8
Engineering notation
1.29856821 × 10^6
Prime Factorization
3 × 181 × 239147
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
129856821
Product of the distinct prime numbers
The prime factorization of 129856821 is 3 × 181 × 239147.
Since it has a total of 3 prime factors.
1 , 10 , 71 , 65 , 807 , 606 , 8561 , 3482 , 82229 , 3297 , 549459 , 859099 , 2007884 , 4381425 , 24030040 , 62244626 , 590717632 , 420611262 , 3892631471 , 9714784132
n×2
259713642
n×3
389570463
n×4
519427284
n×5
649284105
n÷2
64928410.5
n÷3
43285607
n÷3
32464205.25
n÷5
25971364.2
n2
16862793960226041
n3
2.189748816853E+24
n4
2.8435382014504E+32
n5
3.692528312324E+40
2 √n
11395.473706696
3 √n
506.39365519305
4 √n
106.74958410549
5 √n
41.946231884387
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
-129856820
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 129856821 can be divided by 8 positive divisors.
The sum of these divisors (counting 129856821) is 1, the average is 0.125.
Base
System
Value
2
Binary
111101111010111010100110101
3
Ternary
100001100102001220
4
Quaternary
13233113110311
5
Quinary
231220404241
6
Senary
20515140553
8
Octal
757272465
10
Decimal
129856821
12
Duodecimal
375a4759
16
Hexadecimal
7bd7535
20
Vigesimal
20bc211
36
Base36
25ba5x
md5
eda2acd45b4b3f3516dcf4316b04c34c
sha1
c3f08abc938444a251e9de54f1ceadf58cdcf765
sha256
6f86785c437d6e384557a7a56aed56cc51fb319a16303cb40df83b50f7019a1c
sha512
122d619f339d084f4627cf8358b490357283916d1ba2dd2dada673f4820da42c0cbccb8d4ccb9f7fd48fa6ac6cfa57013a474d3bb1c3cacf45713b4d359be38c
ripemd-160
ab25a2488231cab9cab6f60c3119f766ca561b10
Diameter
259713642
Circumference
815914469.74425
Area
5.2976029624444E+16
Volume
9.1723983949762E+24
Surface area
2.1190411849778E+17
Circumference
815914469.74425
Perimeter
519427284
Area
16862793960226041
Diagonal
183645277.42486
Surface area
101176763761356246
Volume
2.189748816853E+24
Space diagonal
224918611.68138
Perimeter
389570463
Area
7.3018039741693E+15
Altitude
112459305.84069
Surface area
7.3018039741693E+15
Volume
2.5806437291532E+23
Height
61215092.474952