28165989 is an odd 8-digits composite number following 28165988
and preceding 28165990 . In scientific notation, it is written as 2.8165989 × 10^7.
The sum of its digits is 48. It has a total of 3 prime factors and 8 positive divisors.
There are 17705856 positive integers (up to 28165989) that are relatively prime to 28165989.
28165989 has 8 divisors, whose sum is 29367000
The reverse of 28165989 is 98956182
Previous prime number is 29
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 48
Digital Root 3
Name
twenty-eight million one hundred sixty-five thousand nine hundred eighty-nine
Scientific notation
2.8165989 × 10^7
Engineering notation
2.8165989 × 10^6
Prime Factorization
129 × 29 × 7529
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
28165989
Product of the distinct prime numbers
The prime factorization of 28165989 is 129 × 29 × 7529.
Since it has a total of 3 prime factors.
7 , 5 , 78 , 56 , 708 , 436 , 968 , 9701 , 25241 , 50003 , 534528 , 188806 , 7004172 , 2871931 , 95341839 , 74499459 , 259153874 , 478814987 , 3330068864 , 5866040959
n×2
56331978
n×3
84497967
n×4
112663956
n×5
140829945
n÷2
14082994.5
n÷3
9388663
n÷3
7041497.25
n÷5
5633197.8
n2
793322936348121
n3
2.2344725098629E+22
n4
6.29361281336E+29
n5
1.7726582927136E+37
2 √n
5307.1639318943
3 √n
304.25776340243
4 √n
72.850284363854
5 √n
30.899041031402
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
-28165988
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 28165989 can be divided by 8 positive divisors.
The sum of these divisors (counting 28165989) is 1, the average is 0.125.
Base
System
Value
2
Binary
1101011011100011101100101
3
Ternary
1221222222110210
4
Quaternary
1223130131211
5
Quinary
24202302424
6
Senary
2443410033
8
Octal
153343545
10
Decimal
28165989
12
Duodecimal
9523919
16
Hexadecimal
1adc765
20
Vigesimal
8g0ej9
36
Base36
grp0l
md5
15ff1618464b6690ab1bcf0319cd00c5
sha1
3314eb285edf27c1055f51d56ea06e653ac1afde
sha256
387d1fabc3cb2a4be2f940792d4191ba0e2f1eeb85bb15c69c1369285697934e
sha512
5379c25d955db4047ae6298d90b8b6511aff6b454968fdd3d62ab090094d5b36d5fe72cebaab51525ea9485ed0bcda84178a05fb6bd4e0cef1afbcafa703df69
ripemd-160
e40733b67934108e7eeef5ec7a44cb7ea059d2c2
Diameter
56331978
Circumference
176972128.24698
Area
2.4922975087555E+15
Volume
9.3597365621781E+22
Surface area
9.9691900350222E+15
Circumference
176972128.24698
Perimeter
112663956
Area
793322936348121
Diagonal
39832723.641451
Surface area
4759937618088726
Volume
2.2344725098629E+22
Space diagonal
48784923.993426
Perimeter
84497967
Area
3.4351890814117E+14
Altitude
24392461.996713
Surface area
3.4351890814117E+14
Volume
2.6333511068316E+21
Height
13277574.54715