28131539 is an odd 8-digits composite number following 28131538
and preceding 28131540 . In scientific notation, it is written as 2.8131539 × 10^7.
The sum of its digits is 32. It has a total of 2 prime factors and 4 positive divisors.
There are 27224040 positive integers (up to 28131539) that are relatively prime to 28131539.
28131539 has 4 divisors, whose sum is 29039040
The reverse of 28131539 is 93513182
Previous prime number is 31
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5
Name
twenty-eight million one hundred thirty-one thousand five hundred thirty-nine
Scientific notation
2.8131539 × 10^7
Engineering notation
2.8131539 × 10^6
Prime Factorization
31 × 907469
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28131539
Product of the distinct prime numbers
The prime factorization of 28131539 is 31 × 907469.
Since it has a total of 2 prime factors.
7 , 7 , 67 , 50 , 900 , 379 , 7517 , 9527 , 31428 , 29485 , 415951 , 901984 , 6314955 , 2807816 , 86589040 , 8874271 , 978159690 , 159304462 , 1711307116 , 7639846642
n×2
56263078
n×3
84394617
n×4
112526156
n×5
140657695
n÷2
14065769.5
n÷3
9377179.6666667
n÷3
7032884.75
n÷5
5626307.8
n2
791383486508521
n3
2.226283541467E+22
n4
6.2628782271838E+29
n5
1.7618440310027E+37
2 √n
5303.9173259017
3 √n
304.13366625985
4 √n
72.827998228028
5 √n
30.891478768056
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
-28131538
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 28131539 can be divided by 4 positive divisors.
The sum of these divisors (counting 28131539) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101011010100000011010011
3
Ternary
1221221020012212
4
Quaternary
1223110003103
5
Quinary
24200202124
6
Senary
2442542335
8
Octal
153240323
10
Decimal
28131539
12
Duodecimal
95079ab
16
Hexadecimal
1ad40d3
20
Vigesimal
8fg8gj
36
Base36
gqyfn
md5
0419904cd6ac6a7d7504ca5843b46821
sha1
683cff156512ac774b446010ee9746f8e7f063b1
sha256
8b4e251638ef410a1951ad4d69bdd8b8ee79465352c1ba9a54e9b3a4ebad97ec
sha512
68e28bf692fd36ee3163c71e28d690a5b0d6aa0df8faa51a28cd2a81313b8db51a434e280d3f9f38615ae22f2b92e1eeda5c0b6efd789abe3c486dc2b8d6032e
ripemd-160
2f87e30452ef70f69e14bf2b9555665f9f0a40ef
Diameter
56263078
Circumference
176755672.51315
Area
2.4862045473874E+15
Volume
9.3254346915743E+22
Surface area
9.9448181895498E+15
Circumference
176755672.51315
Perimeter
112526156
Area
791383486508521
Diagonal
39784003.984228
Surface area
4748300919051126
Volume
2.226283541467E+22
Space diagonal
48725254.843105
Perimeter
84394617
Area
3.4267910172594E+14
Altitude
24362627.421553
Surface area
3.4267910172594E+14
Volume
2.6237003150256E+21
Height
13261334.661409