28388639 is an odd 8-digits prime number following 28388638
and preceding 28388640 . In scientific notation, it is written as 2.8388639 × 10^7.
The sum of its digits is 47. It has a total of 1 prime factors and 2 positive divisors.
There are 28388638 positive integers (up to 28388639) that are relatively prime to 28388639.
28388639 has 2 divisors, whose sum is 28388640
The reverse of 28388639 is 93688382
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 47 Digital Root 2
Name
twenty-eight million three hundred eighty-eight thousand six hundred thirty-nine
Scientific notation
2.8388639 × 10^7
Engineering notation
2.8388639 × 10^6
Prime Factorization
28388639
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
28388639 Product of the distinct prime numbers
The prime factorization of 28388639 is 28388639.
Since it has a total of 1 prime factors.
8 , 7 , 100 , 66 , 398 , 810 , 3355 , 8429 , 83877 , 62933 , 478799 , 763517 , 7214589 , 630038 , 77915704 , 96000139 , 29857167 , 74873971 , 6519025677 , 1387426743
n×2
56777278
n×3
85165917
n×4
113554556
n×5
141943195
n÷2
14194319.5
n÷3
9462879.6666667
n÷3
7097159.75
n÷5
5677727.8
n2
805914824272321
n3
2.2878825011015E+22
n4
6.4949870398189E+29
n5
1.843838423831E+37
2 √n5328.0990043354
3 √n305.05737163159
4 √n72.993828535948
5 √n30.947738208563
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
28388640 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
14194320 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
5328.0990981775 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999295493 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28388639 can be divided by 2 positive divisors.
The sum of these divisors (counting 28388639) is 28388640, the average is 14194320.
Base
System
Value
2
Binary
1101100010010110100011111
3
Ternary
1222102021220002
4
Quaternary
1230102310133
5
Quinary
24231414024
6
Senary
2452244515
8
Octal
154226437
10
Decimal
28388639
12
Duodecimal
961073b
16
Hexadecimal
1b12d1f
20
Vigesimal
8h8bbj
36
Base36
gwgtb
md5
50808b868bb4ef0e86bf817708b89375
sha1
9b8aecc0342d75bcff74841542a79d64d6c670b6
sha256
931e255880c6d05c8fc5d7d6a6e34726a08cd6ab3429ebdeae134d8de11d58d7
sha512
cf36b55befa82aea5a688e2ee3319f36825146f908d27853a3d933ac84cecfb9326dbc4dac94600acb342a29349fc86790830f722baeabd99266bd26fd192bfe
ripemd-160
998a37bbf9e9dee263b3d9e8fcfbd4c722bd2d79
Diameter
56777278
Circumference
178371079.45563
Area
2.531856091353E+15
Volume
9.5834598103163E+22
Surface area
1.0127424365412E+16
Circumference
178371079.45563
Perimeter
113554556
Area
805914824272321
Diagonal
40147598.291114
Surface area
4835488945633926
Volume
2.2878825011015E+22
Space diagonal
49170565.105731
Perimeter
85165917
Area
3.4897135555315E+14
Altitude
24585282.552866
Surface area
3.4897135555315E+14
Volume
2.6962953851449E+21
Height
13382532.763705