28131085 is an odd 8-digits composite number following 28131084
and preceding 28131086 . In scientific notation, it is written as 2.8131085 × 10^7.
The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors.
There are 22504864 positive integers (up to 28131085) that are relatively prime to 28131085.
28131085 has 4 divisors, whose sum is 33757308
The reverse of 28131085 is 58013182
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty-eight million one hundred thirty-one thousand eighty-five
Scientific notation
2.8131085 × 10^7
Engineering notation
2.8131085 × 10^6
Prime Factorization
5 × 5626217
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28131085
Product of the distinct prime numbers
The prime factorization of 28131085 is 5 × 5626217.
Since it has a total of 2 prime factors.
7 , 2 , 79 , 18 , 891 , 589 , 8680 , 1140 , 65792 , 26855 , 512892 , 809974 , 4831385 , 7804992 , 70731782 , 45363025 , 442749067 , 185537512 , 919318265 , 2548346234
n×2
56262170
n×3
84393255
n×4
112524340
n×5
140655425
n÷2
14065542.5
n÷3
9377028.3333333
n÷3
7032771.25
n÷5
5626217
n2
791357943277225
n3
2.2261757567757E+22
n4
6.2624739438796E+29
n5
1.7617018682556E+37
2 √n
5303.8745271735
3 √n
304.13203016702
4 √n
72.827704393133
5 √n
30.891379059172
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-28131084
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28131085 can be divided by 4 positive divisors.
The sum of these divisors (counting 28131085) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101011010011111100001101
3
Ternary
1221221012121001
4
Quaternary
1223103330031
5
Quinary
24200143320
6
Senary
2442540301
8
Octal
153237415
10
Decimal
28131085
12
Duodecimal
9507691
16
Hexadecimal
1ad3f0d
20
Vigesimal
8fg7e5
36
Base36
gqy31
md5
24fd7ea78bcf10bf080dbbc27e5240cc
sha1
40fc8fd9d975181a9f1d96ff345396e21b7867f0
sha256
1dd630289763aa172d7a60da631e9884e887a2eb5683b048f42ca050d13bd81b
sha512
409593c412bd233207be2ccf51496f06ef87be76b2720b504e37e21b466345e62b3a6f490caa1d74a495f3ec5e075b75fc2e9a06afe3f1d994dafa6966e77a57
ripemd-160
75796ff9ce94af73548cecaaa9e2f08d2a4e503b
Diameter
56262170
Circumference
176752819.94702
Area
2.4861243009597E+15
Volume
9.3249832041149E+22
Surface area
9.9444972038386E+15
Circumference
176752819.94702
Perimeter
112524340
Area
791357943277225
Diagonal
39783361.93127
Surface area
4748147659663350
Volume
2.2261757567757E+22
Space diagonal
48724468.492039
Perimeter
84393255
Area
3.4266804118234E+14
Altitude
24362234.246019
Surface area
3.4266804118234E+14
Volume
2.6235732895486E+21
Height
13261120.643757