28215531 is an odd 8-digits composite number following 28215530
and preceding 28215532 . In scientific notation, it is written as 2.8215531 × 10^7.
The sum of its digits is 27. It has a total of 3 prime factors and 6 positive divisors.
There are 18810348 positive integers (up to 28215531) that are relatively prime to 28215531.
28215531 has 6 divisors, whose sum is 40755780
The reverse of 28215531 is 13551282
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty-eight million two hundred fifteen thousand five hundred thirty-one
Scientific notation
2.8215531 × 10^7
Engineering notation
2.8215531 × 10^6
Prime Factorization
3 × 3 × 3135059
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
9405177
Product of the distinct prime numbers
The prime factorization of 28215531 is 3 × 3 × 3135059.
Since it has a total of 3 prime factors.
5 , 3 , 65 , 54 , 194 , 403 , 4764 , 9837 , 69183 , 70692 , 366622 , 261082 , 9986020 , 422631 , 30325053 , 34409271 , 738821805 , 174271124 , 1940014570 , 1272453921
n×2
56431062
n×3
84646593
n×4
112862124
n×5
141077655
n÷2
14107765.5
n÷3
9405177
n÷3
7053882.75
n÷5
5643106.2
n2
796116189611961
n3
2.2462841027598E+22
n4
6.3380098736227E+29
n5
1.7883031406751E+37
2 √n
5311.8293459033
3 √n
304.4360482714
4 √n
72.882297891212
5 √n
30.909903241125
6 divisors
τ
Total Divisors
6
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-28215530
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.16666666666667
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
6
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28215531 can be divided by 6 positive divisors.
The sum of these divisors (counting 28215531) is 1, the average is 0.16666666666667.
Base
System
Value
2
Binary
1101011101000100011101011
3
Ternary
1222002111102200
4
Quaternary
1223220203223
5
Quinary
24210344111
6
Senary
2444431243
8
Octal
153504353
10
Decimal
28215531
12
Duodecimal
9548523
16
Hexadecimal
1ae88eb
20
Vigesimal
8g6igb
36
Base36
gsr8r
md5
c4925e4872d38d484f5070268a10662e
sha1
e1f25b59fc8d3142041af83be10b37b9472bcbc7
sha256
a1a7da5513a25f9693e67169f1e30bdfe69bb5b54da8ee5b31007f181b9f16fb
sha512
6e2460224c53804b6bcd1763bc206d5abd300734b7426d2eaedb94a3758c5641d2499e2adfae142183fdbd2a791c103d5ea073181ce7b472163ca1c4cc4b8fdf
ripemd-160
f0f7bf4e1dda5fa69756c0a17215b9a7b95cde4a
Diameter
56431062
Circumference
177283409.81347
Area
2.5010727726888E+15
Volume
9.4092128468077E+22
Surface area
1.0004291090755E+16
Circumference
177283409.81347
Perimeter
112862124
Area
796116189611961
Diagonal
39902786.609758
Surface area
4776697137671766
Volume
2.2462841027598E+22
Space diagonal
48870733.254535
Perimeter
84646593
Area
3.4472842228401E+14
Altitude
24435366.627267
Surface area
3.4472842228401E+14
Volume
2.647271202555E+21
Height
13300928.86992