28239145 is an odd 8-digits composite number following 28239144
and preceding 28239146 . In scientific notation, it is written as 2.8239145 × 10^7.
The sum of its digits is 34. It has a total of 3 prime factors and 8 positive divisors.
There are 20537520 positive integers (up to 28239145) that are relatively prime to 28239145.
28239145 has 8 divisors, whose sum is 36967680
The reverse of 28239145 is 54193282
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
twenty-eight million two hundred thirty-nine thousand one hundred forty-five
Scientific notation
2.8239145 × 10^7
Engineering notation
2.8239145 × 10^6
Prime Factorization
5 × 11 × 513439
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
28239145
Product of the distinct prime numbers
The prime factorization of 28239145 is 5 × 11 × 513439.
Since it has a total of 3 prime factors.
3 , 4 , 52 , 69 , 394 , 755 , 4483 , 5483 , 17149 , 89041 , 490584 , 70096 , 8374122 , 4158528 , 2464139 , 80883142 , 52860145 , 336962818 , 533392115 , 4784256989
n×2
56478290
n×3
84717435
n×4
112956580
n×5
141195725
n÷2
14119572.5
n÷3
9413048.3333333
n÷3
7059786.25
n÷5
5647829
n2
797449310331025
n3
2.2519286704588E+22
n4
6.3592540254743E+29
n5
1.795798965172E+37
2 √n
5314.0516557519
3 √n
304.52095361734
4 √n
72.897542179088
5 √n
30.915075302072
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
-28239144
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 28239145 can be divided by 8 positive divisors.
The sum of these divisors (counting 28239145) is 1, the average is 0.125.
Base
System
Value
2
Binary
1101011101110010100101001
3
Ternary
1222010200211021
4
Quaternary
1223232110221
5
Quinary
24212123040
6
Senary
2445132441
8
Octal
153562451
10
Decimal
28239145
12
Duodecimal
955a121
16
Hexadecimal
1aee529
20
Vigesimal
8g9hh5
36
Base36
gt9gp
md5
e01ee8e40b16d090c57ec38a9f20f1dc
sha1
732284f4b178996735e3bb2909e370be7bde553c
sha256
9ea4f1587c094e4ac761ae0e2ac6fe6d95b92bc976050f09bb14a8c2a0385a51
sha512
2e6c920d21b3537c6bd71a39b95659676730ae6115fa4289bd4429ab35f8efcd79cb3282702c672b66dbddb07a6f82fbfc3b16571a7755b384d1da35b970f73a
ripemd-160
2b7a109606d9ce8297ebd6d4124315a4323911ff
Diameter
56478290
Circumference
177431780.95131
Area
2.5052608949462E+15
Volume
9.4328567566954E+22
Surface area
1.0021043579785E+16
Circumference
177431780.95131
Perimeter
112956580
Area
797449310331025
Diagonal
39936181.84882
Surface area
4784695861986150
Volume
2.2519286704588E+22
Space diagonal
48911633.902305
Perimeter
84717435
Area
3.4530568048852E+14
Altitude
24455816.951152
Surface area
3.4530568048852E+14
Volume
2.653923389383E+21
Height
13312060.616273