21080145 is an odd 8-digits composite number following 21080144
and preceding 21080146 . In scientific notation, it is written as 2.1080145 × 10^7.
The sum of its digits is 21. It has a total of 3 prime factors and 8 positive divisors.
There are 11242736 positive integers (up to 21080145) that are relatively prime to 21080145.
21080145 has 8 divisors, whose sum is 33728256
The reverse of 21080145 is 54108012
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 21
Digital Root 3
Name
twenty-one million eighty thousand one hundred forty-five
Scientific notation
2.1080145 × 10^7
Engineering notation
2.1080145 × 10^6
Prime Factorization
5 × 3 × 1405343
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21080145
Product of the distinct prime numbers
The prime factorization of 21080145 is 5 × 3 × 1405343.
Since it has a total of 3 prime factors.
9 , 7 , 29 , 69 , 876 , 647 , 3695 , 4185 , 71623 , 63559 , 605466 , 124583 , 2118893 , 565501 , 45136864 , 16902093 , 995670474 , 805878403 , 9755027013 , 6327016288
n×2
42160290
n×3
63240435
n×4
84320580
n×5
105400725
n÷2
10540072.5
n÷3
7026715
n÷3
5270036.25
n÷5
4216029
n2
444372513221025
n3
9.3674370127136E+21
n4
1.9746693050637E+29
n5
4.1626315277792E+36
2 √n
4591.3119040205
3 √n
276.24294666102
4 √n
67.759220066501
5 √n
29.159140518572
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
-21080144
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 21080145 can be divided by 8 positive divisors.
The sum of these divisors (counting 21080145) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000011010100001010001
3
Ternary
1110122222112010
4
Quaternary
1100122201101
5
Quinary
20344031040
6
Senary
2031453133
8
Octal
120324121
10
Decimal
21080145
12
Duodecimal
70871a9
16
Hexadecimal
141a851
20
Vigesimal
6bf075
36
Base36
cjtjl
md5
071aa9d064b695958d62b3109eb2f331
sha1
1477d3fdf554e18969d0eda49051452f641b19f6
sha256
92c3678ee5518e2810283a10d90fe705c693dad7027d44b320e31e2df52072ee
sha512
d0067d467196f0bd7add9c23f46ed6d9440c704d1d298c0af4272226dcf6bc1adf4d1493efda0371b012e765555c0b6fc491c92b87711484b03d01cd534916c0
ripemd-160
09da143a8f8e3bb4a865e0ac3e5bf65efd693174
Diameter
42160290
Circumference
132450457.33722
Area
1.3960374229924E+15
Volume
3.9238228402808E+22
Surface area
5.5841496919696E+15
Circumference
132450457.33722
Perimeter
84320580
Area
444372513221025
Diagonal
29811826.955791
Surface area
2666235079326150
Volume
9.3674370127136E+21
Space diagonal
36511882.170919
Perimeter
63240435
Area
1.9241894259647E+14
Altitude
18255941.08546
Surface area
1.9241894259647E+14
Volume
1.1039630390046E+21
Height
9937275.6519305