128396987 is an odd 9-digits prime number following 128396986
and preceding 128396988 . In scientific notation, it is written as 1.28396987 × 10^8.
The sum of its digits is 53. It has a total of 1 prime factors and 2 positive divisors.
There are 128396986 positive integers (up to 128396987) that are relatively prime to 128396987.
128396987 has 2 divisors, whose sum is 128396988
The reverse of 128396987 is 789693821
Previous prime number is 1
Is Prime? yes Number parity odd Number length 9 Sum of Digits 53 Digital Root 8
Name
one hundred twenty-eight million three hundred ninety-six thousand nine hundred eighty-seven
Scientific notation
1.28396987 × 10^8
Engineering notation
1.28396987 × 10^6
Prime Factorization
128396987
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
128396987 Product of the distinct prime numbers
The prime factorization of 128396987 is 128396987.
Since it has a total of 1 prime factors.
3 , 6 , 76 , 100 , 566 , 781 , 4772 , 5814 , 38358 , 62137 , 558093 , 536648 , 3588389 , 674210 , 63383629 , 30576474 , 665605963 , 86655093 , 2070347214 , 5590424802
n×2
256793974
n×3
385190961
n×4
513587948
n×5
641984935
n÷2
64198493.5
n÷3
42798995.666667
n÷3
32099246.75
n÷5
25679397.4
n2
16485786270678169
n3
2.116725285481E+24
n4
2.7178114896248E+32
n5
3.4895880650181E+40
2 √n11331.239429118
3 √n504.48889503992
4 √n106.44829462757
5 √n41.851494059409
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
128396988 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
64198494 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
11331.239473244 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999844233 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 128396987 can be divided by 2 positive divisors.
The sum of these divisors (counting 128396987) is 128396988, the average is 64198494.
Base
System
Value
2
Binary
111101001110010111010111011
3
Ternary
22221121020112222
4
Quaternary
13221302322323
5
Quinary
230332200422
6
Senary
20423554255
8
Octal
751627273
10
Decimal
128396987
12
Duodecimal
36bbb98b
16
Hexadecimal
7a72ebb
20
Vigesimal
2029c97
36
Base36
24fzqz
md5
d79e79cc8d53c7374e9f3a4f005864b1
sha1
26b13ff6f69d5d0e845fbeb4c951f055fa457586
sha256
223a73a097c12eb93c3a5ceb5a76ef883d77acf93ea0b5eb3310e11050f38f00
sha512
07ef6e9780f0f0b4701dfaff754f93fc10509c6a940269b8012eba1c02010cc3b0b0ace6724a29d073345e15bdba80002a2491dae34f592b02e0144c567b5f2e
ripemd-160
a10ac78775b40e920a0d1417e6d1805ef5d7d49f
Diameter
256793974
Circumference
806742062.20453
Area
5.1791625036614E+16
Volume
8.8665181420467E+24
Surface area
2.0716650014646E+17
Circumference
806742062.20453
Perimeter
513587948
Area
16485786270678169
Diagonal
181580760.38324
Surface area
98914717624069014
Volume
2.116725285481E+24
Space diagonal
222390105.02276
Perimeter
385190961
Area
7.138554855884E+15
Altitude
111195052.51138
Surface area
7.138554855884E+15
Volume
2.4945846721211E+23
Height
60526920.127747