128247391 is an odd 9-digits prime number following 128247390
and preceding 128247392 . In scientific notation, it is written as 1.28247391 × 10^8.
The sum of its digits is 37. It has a total of 1 prime factors and 2 positive divisors.
There are 128247390 positive integers (up to 128247391) that are relatively prime to 128247391.
128247391 has 2 divisors, whose sum is 128247392
The reverse of 128247391 is 193742821
Previous prime number is 1
Is Prime? yes Number parity odd Number length 9 Sum of Digits 37 Digital Root 1
Name
one hundred twenty-eight million two hundred forty-seven thousand three hundred ninety-one
Scientific notation
1.28247391 × 10^8
Engineering notation
1.28247391 × 10^6
Prime Factorization
128247391
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
128247391 Product of the distinct prime numbers
The prime factorization of 128247391 is 128247391.
Since it has a total of 1 prime factors.
7 , 10 , 47 , 52 , 880 , 307 , 8396 , 6288 , 49837 , 94937 , 431513 , 891180 , 3321684 , 8021917 , 77021235 , 77835129 , 488916426 , 447645936 , 5518245510 , 5433443489
n×2
256494782
n×3
384742173
n×4
512989564
n×5
641236955
n÷2
64123695.5
n÷3
42749130.333333
n÷3
32061847.75
n÷5
25649478.2
n2
16447393298306881
n3
2.1093352792587E+24
n4
2.7051674630919E+32
n5
3.4693066935963E+40
2 √n11324.636462156
3 √n504.29289134994
4 √n106.41727520547
5 √n41.841737232404
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
128247392 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
64123696 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
11324.636506308 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999844051 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 128247391 can be divided by 2 positive divisors.
The sum of these divisors (counting 128247391) is 128247392, the average is 64123696.
Base
System
Value
2
Binary
111101001001110011001011111
3
Ternary
22221022122100101
4
Quaternary
13221032121133
5
Quinary
230312404031
6
Senary
20420441531
8
Octal
751163137
10
Decimal
128247391
12
Duodecimal
36b492a7
16
Hexadecimal
7a4e65f
20
Vigesimal
201ai9b
36
Base36
24csbj
md5
59e205fba6bca0c92b8953a18b424017
sha1
1a2e1d3876331852a6bfc8ea7e48bc517e1fb246
sha256
c00b568fdf03b1828d5dcb56a10cbbae2c86c1bfe7d2d9b6850797866f8b71e5
sha512
b95692891758491b09c98d8a468ca13dadc62967b749f0631b4165e16d48f8c436626dcaf5b7490e5011cbe9857525a72c1678460020a69fe1291ca820e6ee23
ripemd-160
be9c52727314cc6ccf23b35e8a1990511fe17daa
Diameter
256494782
Circumference
805802122.81532
Area
5.1671009956663E+16
Volume
8.8355629563694E+24
Surface area
2.0668403982665E+17
Circumference
805802122.81532
Perimeter
512989564
Area
16447393298306881
Diagonal
181369199.69117
Surface area
98684359789841286
Volume
2.1093352792587E+24
Space diagonal
222130997.15015
Perimeter
384742173
Area
7.1219302111838E+15
Altitude
111065498.57508
Surface area
7.1219302111838E+15
Volume
2.4858754662665E+23
Height
60456399.897055