128307987 is an odd 9-digits composite number following 128307986
and preceding 128307988 . In scientific notation, it is written as 1.28307987 × 10^8.
The sum of its digits is 45. It has a total of 3 prime factors and 8 positive divisors.
There are 85467888 positive integers (up to 128307987) that are relatively prime to 128307987.
128307987 has 8 divisors, whose sum is 142682400
The reverse of 128307987 is 789703821
Previous prime number is 1367
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 45
Digital Root 9
Name
one hundred twenty-eight million three hundred seven thousand nine hundred eighty-seven
Scientific notation
1.28307987 × 10^8
Engineering notation
1.28307987 × 10^6
Prime Factorization
9 × 1367 × 10429
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
128307987
Product of the distinct prime numbers
The prime factorization of 128307987 is 9 × 1367 × 10429.
Since it has a total of 3 prime factors.
2 , 10 , 54 , 18 , 867 , 3 , 1989 , 2339 , 17265 , 32429 , 871838 , 540043 , 8989161 , 2796984 , 36671084 , 17993063 , 76899665 , 459450110 , 1361370293 , 3768408239
n×2
256615974
n×3
384923961
n×4
513231948
n×5
641539935
n÷2
64153993.5
n÷3
42769329
n÷3
32076996.75
n÷5
25661597.4
n2
16462939527992169
n3
2.1123266309394E+24
n4
2.7102837790233E+32
n5
3.4775105588523E+40
2 √n
11327.311552173
3 √n
504.37230380486
4 √n
106.42984333435
5 √n
41.845690471272
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
-128307986
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 128307987 can be divided by 8 positive divisors.
The sum of these divisors (counting 128307987) is 1, the average is 0.125.
Base
System
Value
2
Binary
111101001011101001100010011
3
Ternary
22221102201110200
4
Quaternary
13221131030103
5
Quinary
230321323422
6
Senary
20422030243
8
Octal
751351423
10
Decimal
128307987
12
Duodecimal
36b78383
16
Hexadecimal
7a5d313
20
Vigesimal
201i9j7
36
Base36
24e32r
md5
4f369d987c9f23993b791daaf3c8342e
sha1
15eea2fc3dd918b2cba68651665cbadef6287d6f
sha256
096274dadfdff998fd48bfc62232653249109d5b2b8d46ba0c98cb880f2253c5
sha512
13c7b9dc53325838602a5da1a1fc6e206b2a404bd6f5d1539ad48b7d9563037586c85942dddde90948af681fc807c59fe509c4c402a9ff56afeb496e7e22a6d0
ripemd-160
8d640d48e9d927d74935a5a091b948ee0f2960af
Diameter
256615974
Circumference
806182858.71219
Area
5.1719849877633E+16
Volume
8.8480931009884E+24
Surface area
2.0687939951053E+17
Circumference
806182858.71219
Perimeter
513231948
Area
16462939527992169
Diagonal
181454895.37619
Surface area
98777637167953014
Volume
2.1123266309394E+24
Space diagonal
222235952.50089
Perimeter
384923961
Area
7.1286619261041E+15
Altitude
111117976.25044
Surface area
7.1286619261041E+15
Volume
2.4894008080303E+23
Height
60484965.125397