128840387 is an odd 9-digits composite number following 128840386
and preceding 128840388 . In scientific notation, it is written as 1.28840387 × 10^8.
The sum of its digits is 41. It has a total of 4 prime factors and 16 positive divisors.
There are 112039200 positive integers (up to 128840387) that are relatively prime to 128840387.
128840387 has 16 divisors, whose sum is 146872320
The reverse of 128840387 is 783048821
Previous prime number is 191
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 41
Digital Root 5
Name
one hundred twenty-eight million eight hundred forty thousand three hundred eighty-seven
Scientific notation
1.28840387 × 10^8
Engineering notation
1.28840387 × 10^6
Prime Factorization
13 × 19 × 191 × 2731
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
128840387
Product of the distinct prime numbers
The prime factorization of 128840387 is 13 × 19 × 191 × 2731.
Since it has a total of 4 prime factors.
2 , 10 , 90 , 61 , 55 , 166 , 8618 , 6286 , 40826 , 60132 , 558228 , 572552 , 296332 , 8221608 , 35091690 , 32883850 , 438385640 , 605829355 , 7525015584 , 8853854300
n×2
257680774
n×3
386521161
n×4
515361548
n×5
644201935
n÷2
64420193.5
n÷3
42946795.666667
n÷3
32210096.75
n÷5
25768077.4
n2
16599845322309769
n3
2.1387304954665E+24
n4
2.7555486472461E+32
n5
3.5502595410851E+40
2 √n
11350.787946218
3 √n
505.06895375803
4 √n
106.54007671397
5 √n
41.880359802146
1 , 13 , 19 , 191 , 247 , 2483 , 2731 , 3629 , 35503 , 47177 , 51889 , 521621 , 674557 , 6781073 , 9910799 , 128840387
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-128840386
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 128840387 can be divided by 16 positive divisors.
The sum of these divisors (counting 128840387) is 1, the average is 0.0625.
Base
System
Value
2
Binary
111101011011111001011000011
3
Ternary
22222102202210012
4
Quaternary
13223133023003
5
Quinary
230440343022
6
Senary
20441255135
8
Octal
753371303
10
Decimal
128840387
12
Duodecimal
371944ab
16
Hexadecimal
7adf2c3
20
Vigesimal
20550j7
36
Base36
24phvn
md5
a64953ed43c0a3edf0784dca0222eb78
sha1
6c599d4e20da325cc84b77a4cd400b2a835503c0
sha256
b9c3c0f11631aa96bde20879fa995c226582dfbad21c0bc429ace5c93e6fb2cc
sha512
ce32643f05918337481d98a3cea857ecb2dc17d6fbd69d8b00096f6d968f26b7ba6a67a80fb742a75e9b2e8bebcd8fbf303b144ca3408bb3cfa9db904f5ccabe
ripemd-160
4d7c7008aeea59c3f8caf015fc63c2aa9dff2a65
Diameter
257680774
Circumference
809528026.56973
Area
5.2149952115295E+16
Volume
8.9586933500881E+24
Surface area
2.0859980846118E+17
Circumference
809528026.56973
Perimeter
515361548
Area
16599845322309769
Diagonal
182207822.6768
Surface area
99599071933858614
Volume
2.1387304954665E+24
Space diagonal
223158096.35084
Perimeter
386521161
Area
7.1879438740063E+15
Altitude
111579048.17542
Surface area
7.1879438740063E+15
Volume
2.5205180607914E+23
Height
60735940.892266