129216981 is an odd 9-digits composite number following 129216980
and preceding 129216982 . In scientific notation, it is written as 1.29216981 × 10^8.
The sum of its digits is 39. It has a total of 3 prime factors and 8 positive divisors.
There are 86116400 positive integers (up to 129216981) that are relatively prime to 129216981.
129216981 has 8 divisors, whose sum is 172345824
The reverse of 129216981 is 189612921
Previous prime number is 4451
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 39
Digital Root 3
Name
one hundred twenty-nine million two hundred sixteen thousand nine hundred eighty-one
Scientific notation
1.29216981 × 10^8
Engineering notation
1.29216981 × 10^6
Prime Factorization
3 × 4451 × 9677
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
129216981
Product of the distinct prime numbers
The prime factorization of 129216981 is 3 × 4451 × 9677.
Since it has a total of 3 prime factors.
6 , 4 , 4 , 76 , 398 , 206 , 1579 , 7011 , 6774 , 31238 , 659113 , 824869 , 6729003 , 4127505 , 48650607 , 7561629 , 453724797 , 364415926 , 8671015723 , 103744025
n×2
258433962
n×3
387650943
n×4
516867924
n×5
646084905
n÷2
64608490.5
n÷3
43072327
n÷3
32304245.25
n÷5
25843396.2
n2
16697028178754361
n3
2.1575395729306E+24
n4
2.7879075000212E+32
n5
3.6024499045999E+40
2 √n
11367.364734185
3 √n
505.56057216417
4 √n
106.61784435162
5 √n
41.90481406634
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
-129216980
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 129216981 can be divided by 8 positive divisors.
The sum of these divisors (counting 129216981) is 1, the average is 0.125.
Base
System
Value
2
Binary
111101100111011000111010101
3
Ternary
100000010220101010
4
Quaternary
13230323013111
5
Quinary
231034420411
6
Senary
20453322433
8
Octal
754730725
10
Decimal
129216981
12
Duodecimal
37336419
16
Hexadecimal
7b3b1d5
20
Vigesimal
207c291
36
Base36
24xkgl
md5
dc92779ebdad83ce7bb2317057ee8256
sha1
93bd09ad41fa54b587a06ec1b32219380db0a114
sha256
9c5b7f12987c15ae914bf926754448e6e0835d7b7e73949914469825bca394bc
sha512
e01d4ea8ac55298343a8977414d61c814296f0b0425081f97ac99d98691ca8002513ac896e363c61b2df444bd1b0979c66b05f68f304ef713957b5e69518c28d
ripemd-160
79a7a883b22ec466c86fae8a0e4dbea663672d7e
Diameter
258433962
Circumference
811894236.4573
Area
5.2455261063156E+16
Volume
9.0374806295306E+24
Surface area
2.0982104425263E+17
Circumference
811894236.4573
Perimeter
516867924
Area
16697028178754361
Diagonal
182740407.01911
Surface area
100182169072526166
Volume
2.1575395729306E+24
Space diagonal
223810376.29266
Perimeter
387650943
Area
7.2300252852529E+15
Altitude
111905188.14633
Surface area
7.2300252852529E+15
Volume
2.5426847711626E+23
Height
60913469.006369