21080181 is an odd 8-digits composite number following 21080180
and preceding 21080182 . In scientific notation, it is written as 2.1080181 × 10^7.
The sum of its digits is 21. It has a total of 3 prime factors and 8 positive divisors.
There are 14025440 positive integers (up to 21080181) that are relatively prime to 21080181.
21080181 has 8 divisors, whose sum is 28162944
The reverse of 21080181 is 18108012
Previous prime number is 521
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 21
Digital Root 3
Name
twenty-one million eighty thousand one hundred eighty-one
Scientific notation
2.1080181 × 10^7
Engineering notation
2.1080181 × 10^6
Prime Factorization
3 × 521 × 13487
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21080181
Product of the distinct prime numbers
The prime factorization of 21080181 is 3 × 521 × 13487.
Since it has a total of 3 prime factors.
7 , 8 , 42 , 67 , 824 , 806 , 9055 , 8641 , 71513 , 49069 , 605660 , 716257 , 5213786 , 8022311 , 91403907 , 45733878 , 648483101 , 769563265 , 5813335415 , 3719390858
n×2
42160362
n×3
63240543
n×4
84320724
n×5
105400905
n÷2
10540090.5
n÷3
7026727
n÷3
5270045.25
n÷5
4216036.2
n2
444374030992761
n3
9.367485005027E+21
n4
1.9746827942076E+29
n5
4.1626670719481E+36
2 √n
4591.3158244669
3 √n
276.2431039139
4 √n
67.759248995741
5 √n
29.159150477975
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
-21080180
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 21080181 can be divided by 8 positive divisors.
The sum of these divisors (counting 21080181) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000011010100001110101
3
Ternary
1110122222120110
4
Quaternary
1100122201311
5
Quinary
20344031211
6
Senary
2031453233
8
Octal
120324165
10
Decimal
21080181
12
Duodecimal
7087219
16
Hexadecimal
141a875
20
Vigesimal
6bf091
36
Base36
cjtkl
md5
154da19c0f197607921c23c77187b5fa
sha1
fbff871b49d10344a1cbe97bb806d2025c7a21d5
sha256
536fb98a1512d2196c3443bcadf269d339b1e147a99b5834bf529b884834c0e0
sha512
9d15b55c331ac49ece7978ac1131cea366578ce6d9d282253715db5053fcda1dc146380f7ccbc7447820feefde4dfe0e4f3195f8868571465c71beef3af5f43d
ripemd-160
7047f8b6e49b53f2f5150afb96d42d86dc0d4bd3
Diameter
42160362
Circumference
132450683.53189
Area
1.3960421912129E+15
Volume
3.9238429432541E+22
Surface area
5.5841687648518E+15
Circumference
132450683.53189
Perimeter
84320724
Area
444374030992761
Diagonal
29811877.86748
Surface area
2666244185956566
Volume
9.367485005027E+21
Space diagonal
36511944.524748
Perimeter
63240543
Area
1.9241959981091E+14
Altitude
18255972.262374
Surface area
1.9241959981091E+14
Volume
1.103968694953E+21
Height
9937292.6224932