128894387 is an odd 9-digits composite number following 128894386
and preceding 128894388 . In scientific notation, it is written as 1.28894387 × 10^8.
The sum of its digits is 50. It has a total of 3 prime factors and 8 positive divisors.
There are 127648224 positive integers (up to 128894387) that are relatively prime to 128894387.
128894387 has 8 divisors, whose sum is 130146000
The reverse of 128894387 is 783498821
Previous prime number is 149
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 50
Digital Root 5
Name
one hundred twenty-eight million eight hundred ninety-four thousand three hundred eighty-seven
Scientific notation
1.28894387 × 10^8
Engineering notation
1.28894387 × 10^6
Prime Factorization
397 × 149 × 2179
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
128894387
Product of the distinct prime numbers
The prime factorization of 128894387 is 397 × 149 × 2179.
Since it has a total of 3 prime factors.
7 , 8 , 31 , 18 , 764 , 642 , 8582 , 3123 , 26503 , 76644 , 246661 , 30258 , 2739752 , 49103 , 89988283 , 2967694 , 580854946 , 448565553 , 8602697541 , 1796085046
n×2
257788774
n×3
386683161
n×4
515577548
n×5
644471935
n÷2
64447193.5
n÷3
42964795.666667
n÷3
32223596.75
n÷5
25778877.4
n2
16613763000105769
n3
2.1414207976619E+24
n4
2.7601712102368E+32
n5
3.5577057615852E+40
2 √n
11353.16638652
3 √n
505.13950594712
4 √n
106.55123831528
5 √n
41.883869820133
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
-128894386
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 128894387 can be divided by 8 positive divisors.
The sum of these divisors (counting 128894387) is 1, the average is 0.125.
Base
System
Value
2
Binary
111101011101100010110110011
3
Ternary
22222112111212012
4
Quaternary
13223230112303
5
Quinary
230444110022
6
Senary
20442353135
8
Octal
753542663
10
Decimal
128894387
12
Duodecimal
371bb7ab
16
Hexadecimal
7aec5b3
20
Vigesimal
205bfj7
36
Base36
24qnjn
md5
7a93ac8ad73784f9fe0580a3ad63cb5f
sha1
d5084b2d83ea69c30121e274cf8ed584ba3f78ce
sha256
4536f9ea5f9944875dd6b5dc0d0a4ffd1360b4002536e1ee64b04ae27523d8f4
sha512
f4c5d810ccac8fe2c96e5822a439a4ceb542746909fdf05491cc91dd6c2e69d5a6f96f25a5e8fd25d2961a92d4b45a2caa9f178235f91d0c93acf7b2f59f4672
ripemd-160
3f62914f9037c3c48bec9c791a078417ad08a412
Diameter
257788774
Circumference
809867318.57632
Area
5.2193675789614E+16
Volume
8.9699624615721E+24
Surface area
2.0877470315846E+17
Circumference
809867318.57632
Perimeter
515577548
Area
16613763000105769
Diagonal
182284190.20917
Surface area
99682578000634614
Volume
2.1414207976619E+24
Space diagonal
223251627.09445
Perimeter
386683161
Area
7.1939704052728E+15
Altitude
111625813.54722
Surface area
7.1939704052728E+15
Volume
2.5236886123344E+23
Height
60761396.736389