128847981 is an odd 9-digits composite number following 128847980
and preceding 128847982 . In scientific notation, it is written as 1.28847981 × 10^8.
The sum of its digits is 48. It has a total of 3 prime factors and 8 positive divisors.
There are 80742144 positive integers (up to 128847981) that are relatively prime to 128847981.
128847981 has 8 divisors, whose sum is 131542944
The reverse of 128847981 is 189748821
Previous prime number is 1307
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 48
Digital Root 3
Name
one hundred twenty-eight million eight hundred forty-seven thousand nine hundred eighty-one
Scientific notation
1.28847981 × 10^8
Engineering notation
1.28847981 × 10^6
Prime Factorization
51 × 1307 × 1933
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
128847981
Product of the distinct prime numbers
The prime factorization of 128847981 is 51 × 1307 × 1933.
Since it has a total of 3 prime factors.
3 , 8 , 90 , 88 , 648 , 577 , 8683 , 3552 , 9860 , 95671 , 874169 , 972590 , 8618872 , 6500304 , 55294439 , 18985923 , 544421049 , 510072831 , 3405574904 , 6515776391
n×2
257695962
n×3
386543943
n×4
515391924
n×5
644239905
n÷2
64423990.5
n÷3
42949327
n÷3
32211995.25
n÷5
25769596.2
n2
16601802207776361
n3
2.1391086954333E+24
n4
2.7561983654613E+32
n5
3.5513059462519E+40
2 √n
11351.122455511
3 √n
505.07887667731
4 √n
106.54164657781
5 √n
41.880853485783
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
-128847980
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 128847981 can be divided by 8 positive divisors.
The sum of these divisors (counting 128847981) is 1, the average is 0.125.
Base
System
Value
2
Binary
111101011100001000001101101
3
Ternary
22222110011012110
4
Quaternary
13223201001231
5
Quinary
230441113411
6
Senary
20441354233
8
Octal
753410155
10
Decimal
128847981
12
Duodecimal
37198979
16
Hexadecimal
7ae106d
20
Vigesimal
2055jj1
36
Base36
24pnql
md5
80fa17321a582b4205184b46ed88dce7
sha1
dcee08d4b2a6757d6c0bedc001cdedb4a2726daa
sha256
d37e24547dc573da9e777164317d6caa97b42dffa32a2232845cc4d669fa3dbf
sha512
643e0c9f809542db2f980ef729ac4311bc17b7ee849d552929fa27680ce9b1915245fd3925273401a8cd3af23af2d12b79f68bb6d00a7a9e03b1f7cc4b4858fa
ripemd-160
697e3f22e72bea8e2817a88b85f408edbd2e181a
Diameter
257695962
Circumference
809575741.07895
Area
5.2156099852301E+16
Volume
8.9602775504045E+24
Surface area
2.086243994092E+17
Circumference
809575741.07895
Perimeter
515391924
Area
16601802207776361
Diagonal
182218562.21459
Surface area
99610813246658166
Volume
2.1391086954333E+24
Space diagonal
223171249.54467
Perimeter
386543943
Area
7.1887912302695E+15
Altitude
111585624.77233
Surface area
7.1887912302695E+15
Volume
2.5209637737267E+23
Height
60739520.738197