28266721 is an odd 8-digits composite number following 28266720
and preceding 28266722 . In scientific notation, it is written as 2.8266721 × 10^7.
The sum of its digits is 34. It has a total of 3 prime factors and 8 positive divisors.
There are 24120528 positive integers (up to 28266721) that are relatively prime to 28266721.
28266721 has 8 divisors, whose sum is 32448960
The reverse of 28266721 is 12766282
Previous prime number is 227
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
twenty-eight million two hundred sixty-six thousand seven hundred twenty-one
Scientific notation
2.8266721 × 10^7
Engineering notation
2.8266721 × 10^6
Prime Factorization
7 × 227 × 17789
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
28266721
Product of the distinct prime numbers
The prime factorization of 28266721 is 7 × 227 × 17789.
Since it has a total of 3 prime factors.
6 , 3 , 89 , 7 , 721 , 510 , 9298 , 3118 , 12929 , 73238 , 569206 , 653519 , 546015 , 6669831 , 3142055 , 42027580 , 914431794 , 638065150 , 7985457309 , 6008832803
n×2
56533442
n×3
84800163
n×4
113066884
n×5
141333605
n÷2
14133360.5
n÷3
9422240.3333333
n÷3
7066680.25
n÷5
5653344.2
n2
799007516091841
n3
2.2585322534271E+22
n4
6.3841301077125E+29
n5
1.8045842458241E+37
2 √n
5316.645653041
3 √n
304.62004464713
4 √n
72.91533208483
5 √n
30.921110763229
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
-28266720
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 28266721 can be divided by 8 positive divisors.
The sum of these divisors (counting 28266721) is 1, the average is 0.125.
Base
System
Value
2
Binary
1101011110101000011100001
3
Ternary
1222012002122121
4
Quaternary
1223311003201
5
Quinary
24214013341
6
Senary
2445504241
8
Octal
153650341
10
Decimal
28266721
12
Duodecimal
9572081
16
Hexadecimal
1af50e1
20
Vigesimal
8gd6g1
36
Base36
gtuqp
md5
32c3eba65022df30b8b60da3240ac692
sha1
4425594b8389aaf9f00843d574a48fb46994f599
sha256
c72146a1eda2a438db04fcddf23769b4b9a1aa5de590e03241b2e005db5b1f98
sha512
002f75e58cb4394d5d07ed339d19e37e0cbcf6f7e85723962d736ea3e3fa2ecba2097912b574338b15cee5ca97598ebcfb3c0c9a856931a40117d9f8c8dfd6c3
ripemd-160
edc0d226d9ea23a2105d611742d682667ffe4d4e
Diameter
56533442
Circumference
177605046.06934
Area
2.5101561427172E+15
Volume
9.4605177803496E+22
Surface area
1.0040624570869E+16
Circumference
177605046.06934
Perimeter
113066884
Area
799007516091841
Diagonal
39975180.202016
Surface area
4794045096551046
Volume
2.2585322534271E+22
Space diagonal
48959396.935374
Perimeter
84800163
Area
3.4598040337512E+14
Altitude
24479698.467687
Surface area
3.4598040337512E+14
Volume
2.6617057865447E+21
Height
13325060.067339