28661531 is an odd 8-digits composite number following 28661530
and preceding 28661532 . In scientific notation, it is written as 2.8661531 × 10^7.
The sum of its digits is 32. It has a total of 2 prime factors and 4 positive divisors.
There are 28503000 positive integers (up to 28661531) that are relatively prime to 28661531.
28661531 has 4 divisors, whose sum is 28820064
The reverse of 28661531 is 13516682
Previous prime number is 181
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5
Name
twenty-eight million six hundred sixty-one thousand five hundred thirty-one
Scientific notation
2.8661531 × 10^7
Engineering notation
2.8661531 × 10^6
Prime Factorization
181 × 158351
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28661531
Product of the distinct prime numbers
The prime factorization of 28661531 is 181 × 158351.
Since it has a total of 2 prime factors.
2 , 6 , 4 , 76 , 514 , 307 , 597 , 460 , 54528 , 20812 , 326219 , 320253 , 63366 , 9281495 , 73810731 , 45170675 , 940221722 , 134527141 , 9657758297 , 6343685872
n×2
57323062
n×3
85984593
n×4
114646124
n×5
143307655
n÷2
14330765.5
n÷3
9553843.6666667
n÷3
7165382.75
n÷5
5732306.2
n2
821483359263961
n3
2.3544970767528E+22
n4
6.748349095476E+29
n5
1.9341801679881E+37
2 √n
5353.6465142929
3 √n
306.03173307828
4 √n
73.168617004101
5 √n
31.007009122917
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
-28661530
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 28661531 can be divided by 4 positive divisors.
The sum of these divisors (counting 28661531) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101101010101011100011011
3
Ternary
1222221011020012
4
Quaternary
1231111130123
5
Quinary
24314132111
6
Senary
2502152135
8
Octal
155253433
10
Decimal
28661531
12
Duodecimal
972264b
16
Hexadecimal
1b5571b
20
Vigesimal
8j2dgb
36
Base36
h2bdn
md5
d13bd014f5fcc5c5338c7a0e1b35aff4
sha1
e671e9cc2dc939d52a37f43a222002163971fbd8
sha256
f1ceb8a05688bc24d3152f8c3f6789fb75a69759e13692ce5e25ed98f91e1612
sha512
48295f8c0fc70c686ac66e05674c0b97ab04ea14bcede8f9bd54cdfd7e6714f8365d6628721a212f77c122b334cd88dba27b6aace37bd00950ae9b8967919a61
ripemd-160
e922c7c6e9528b6d3c497d5bc705a1447b4c3aa5
Diameter
57323062
Circumference
180085710.46047
Area
2.5807660865099E+15
Volume
9.8624942923004E+22
Surface area
1.032306434604E+16
Circumference
180085710.46047
Perimeter
114646124
Area
821483359263961
Diagonal
40533525.858577
Surface area
4928900155583766
Volume
2.3544970767528E+22
Space diagonal
49643227.91471
Perimeter
85984593
Area
3.5571272895438E+14
Altitude
24821613.957355
Surface area
3.5571272895438E+14
Volume
2.7748014154264E+21
Height
13511175.286192