28561 is an odd 5-digits composite number following 28560
and preceding 28562 . In scientific notation, it is written as 2.8561 × 10^4.
The sum of its digits is 22. It has a total of 4 prime factors and 5 positive divisors.
There are 26364 positive integers (up to 28561) that are relatively prime to 28561.
28561 has 5 divisors, whose sum is 30941
The reverse of 28561 is 16582
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 5
Sum of Digits 22
Digital Root 4
Name
twenty-eight thousand five hundred sixty-one
Scientific notation
2.8561 × 10^4
Engineering notation
2.8561 × 10^3
Prime Factorization
13 × 13 × 13 × 13
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
13
Product of the distinct prime numbers
The prime factorization of 28561 is 13 × 13 × 13 × 13.
Since it has a total of 4 prime factors.
10 , 3 , 86 , 11 , 569 , 999 , 1158 , 4960 , 54226 , 5860 , 820210 , 367715 , 8277980 , 5072010 , 7036137 , 54811229 , 142785165 , 880924874 , 2913298309 , 3264033688
n×2
57122
n×3
85683
n×4
114244
n×5
142805
n÷2
14280.5
n÷3
9520.3333333333
n÷3
7140.25
n÷5
5712.2
n2
815730721
n3
23298085122481
n4
665416609183179841
n5
1.9004963774881E+22
2 √n
169
3 √n
30.56735094037
4 √n
13
5 √n
7.7831371220395
5 divisors
τ
Total Divisors
5
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-28560
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.2
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
5
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28561 can be divided by 5 positive divisors.
The sum of these divisors (counting 28561) is 1, the average is 0.2.
Base
System
Value
2
Binary
110111110010001
3
Ternary
1110011211
4
Quaternary
12332101
5
Quinary
1403221
6
Senary
340121
8
Octal
67621
10
Decimal
28561
12
Duodecimal
14641
16
Hexadecimal
6f91
20
Vigesimal
3b81
36
Base36
m1d
md5
b29c5090440079d0121f4973000eeba5
sha1
8d50ebb01bf552bb3ebc4485270693a26b013ae4
sha256
65250e9a16b43191d990a2341ce712fa82f8fd3cbd6143d6a9384be8a25129bd
sha512
0d16ae98367ef95524c1e6e168013e899db93cbaa3593d9699460fee5c44599a6f2b704842d42b63ba9d806984f0ffd1068cc117e4d02fa3c0950df8f8a84c92
ripemd-160
a873cc5acfd65c6df9cd916df8b080a53d538c04
Diameter
57122
Circumference
179454.05555836
Area
2562693640.4011
Volume
97590790751328
Surface area
10250774561.604
Circumference
179454.05555836
Perimeter
114244
Area
815730721
Diagonal
40391.353554938
Surface area
4894384326
Volume
23298085122481
Space diagonal
49469.103114975
Perimeter
85683
Area
353221763.5167
Altitude
24734.551557487
Surface area
353221763.5167
Volume
2745705663128
Height
13463.784518313