128950987 is an odd 9-digits composite number following 128950986
and preceding 128950988 . In scientific notation, it is written as 1.28950987 × 10^8.
The sum of its digits is 49. It has a total of 2 prime factors and 4 positive divisors.
There are 117228160 positive integers (up to 128950987) that are relatively prime to 128950987.
128950987 has 4 divisors, whose sum is 140673816
The reverse of 128950987 is 789059821
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 49
Digital Root 4
Name
one hundred twenty-eight million nine hundred fifty thousand nine hundred eighty-seven
Scientific notation
1.28950987 × 10^8
Engineering notation
1.28950987 × 10^6
Prime Factorization
11 × 11722817
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
128950987
Product of the distinct prime numbers
The prime factorization of 128950987 is 11 × 11722817.
Since it has a total of 2 prime factors.
9 , 1 , 77 , 60 , 46 , 42 , 4663 , 5579 , 65148 , 56741 , 352136 , 9080 , 6211023 , 9706883 , 54732061 , 96016268 , 877647431 , 770906021 , 7176967658 , 9930305890
n×2
257901974
n×3
386852961
n×4
515803948
n×5
644754935
n÷2
64475493.5
n÷3
42983662.333333
n÷3
32237746.75
n÷5
25790197.4
n2
16628357048274169
n3
2.1442430535634E+24
n4
2.7650225812489E+32
n5
3.5655239092933E+40
2 √n
11355.658809598
3 √n
505.21343394555
4 √n
106.56293356321
5 √n
41.887547576475
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
-128950986
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 128950987 can be divided by 4 positive divisors.
The sum of these divisors (counting 128950987) is 1, the average is 0.25.
Base
System
Value
2
Binary
111101011111010001011001011
3
Ternary
22222122101111111
4
Quaternary
13223322023023
5
Quinary
231002412422
6
Senary
20443511151
8
Octal
753721313
10
Decimal
128950987
12
Duodecimal
372284b7
16
Hexadecimal
7afa2cb
20
Vigesimal
205ih97
36
Base36
24rv7v
md5
b58cab65698e722a18e7af8d49cdb9c0
sha1
1ba78a93adf014909d511b631cc3e79e5646a951
sha256
bd58d1e27024f93dc789e66277dace58346b4a71be3c3e34966d0bf980ce75fb
sha512
8ab39b6e8745f412f36377e0957ca060e529ee22d13fffc5f54f2785295f881eceb438cd066daa31aa36fb8a127e95ee3338004ae9aa54ea864b2a494b76eacf
ripemd-160
4b28dbf5dd371872657c5f7325b854b94bcd619f
Diameter
257901974
Circumference
810222946.86471
Area
5.2239524344126E+16
Volume
8.9817842994475E+24
Surface area
2.089580973765E+17
Circumference
810222946.86471
Perimeter
515803948
Area
16628357048274169
Diagonal
182364234.6968
Surface area
99770142289645014
Volume
2.1442430535634E+24
Space diagonal
223349661.17015
Perimeter
386852961
Area
7.2002898135017E+15
Altitude
111674830.58508
Surface area
7.2002898135017E+15
Volume
2.5270146728113E+23
Height
60788078.232266