28031009 is an odd 8-digits composite number following 28031008
and preceding 28031010 . In scientific notation, it is written as 2.8031009 × 10^7.
The sum of its digits is 23. It has a total of 3 prime factors and 8 positive divisors.
There are 27595296 positive integers (up to 28031009) that are relatively prime to 28031009.
28031009 has 8 divisors, whose sum is 28469280
The reverse of 28031009 is 90013082
Previous prime number is 457
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5
Name
twenty-eight million thirty-one thousand nine
Scientific notation
2.8031009 × 10^7
Engineering notation
2.8031009 × 10^6
Prime Factorization
83 × 457 × 739
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
28031009
Product of the distinct prime numbers
The prime factorization of 28031009 is 83 × 457 × 739.
Since it has a total of 3 prime factors.
1 , 10 , 56 , 81 , 942 , 509 , 5423 , 4902 , 28369 , 92838 , 164237 , 961485 , 1139705 , 5213153 , 93889569 , 75443263 , 986073836 , 58567153 , 3488444223 , 7660213446
n×2
56062018
n×3
84093027
n×4
112124036
n×5
140155045
n÷2
14015504.5
n÷3
9343669.6666667
n÷3
7007752.25
n÷5
5606201.8
n2
785737465558081
n3
2.2025013968696E+22
n4
6.1738336478164E+29
n5
1.7305878654644E+37
2 √n
5294.4318864256
3 √n
303.77095295971
4 √n
72.762846882359
5 √n
30.86936857338
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
-28031008
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 28031009 can be divided by 8 positive divisors.
The sum of these divisors (counting 28031009) is 1, the average is 0.125.
Base
System
Value
2
Binary
1101010111011100000100001
3
Ternary
1221202010022112
4
Quaternary
1222323200201
5
Quinary
24133443014
6
Senary
2440445105
8
Octal
152734041
10
Decimal
28031009
12
Duodecimal
9479795
16
Hexadecimal
1abb821
20
Vigesimal
8f3ha9
36
Base36
gosv5
md5
0c27e6bcb6c0a6ff0655c3c96ee939c4
sha1
cca60c52db1c768e31bd873fb4f69c8dcfeacecb
sha256
3e83e4d772f0517213618d84fb74469753b59c0db20deb80d874b8c8830ae37a
sha512
0c14f7b84bad419ba0d6b94549b84f9329141b7fe6b92d84b0cebe6c739ea1a538857d38fc61e6c59ad46fccf367c82e0c8ce8bebfd717eb4ceb2d57df6128da
ripemd-160
2c3e5482ab47659324eee10f9cf6bc3c5b869ee5
Diameter
56062018
Circumference
176124023.89422
Area
2.4684670494475E+15
Volume
9.2258162772356E+22
Surface area
9.8738681977901E+15
Circumference
176124023.89422
Perimeter
112124036
Area
785737465558081
Diagonal
39641833.094802
Surface area
4714424793348486
Volume
2.2025013968696E+22
Space diagonal
48551131.77542
Perimeter
84093027
Area
3.4023430293925E+14
Altitude
24275565.88771
Surface area
3.4023430293925E+14
Volume
2.5956727888322E+21
Height
13213944.364934