21126989 is an odd 8-digits composite number following 21126988
and preceding 21126990 . In scientific notation, it is written as 2.1126989 × 10^7.
The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors.
There are 19501824 positive integers (up to 21126989) that are relatively prime to 21126989.
21126989 has 4 divisors, whose sum is 22752156
The reverse of 21126989 is 98962112
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2
Name
twenty-one million one hundred twenty-six thousand nine hundred eighty-nine
Scientific notation
2.1126989 × 10^7
Engineering notation
2.1126989 × 10^6
Prime Factorization
13 × 1625153
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21126989
Product of the distinct prime numbers
The prime factorization of 21126989 is 13 × 1625153.
Since it has a total of 2 prime factors.
6 , 4 , 24 , 80 , 985 , 673 , 5380 , 2320 , 71690 , 35630 , 478905 , 2659 , 2400626 , 8832537 , 50095682 , 10589587 , 529725953 , 801009042 , 1725746148 , 3090756773
n×2
42253978
n×3
63380967
n×4
84507956
n×5
105634945
n÷2
10563494.5
n÷3
7042329.6666667
n÷3
5281747.25
n÷5
4225397.8
n2
446349664206121
n3
9.4300244458364E+21
n4
1.9922802273692E+29
n5
4.2090882448546E+36
2 √n
4596.4104472947
3 √n
276.44741633522
4 √n
67.796832133181
5 √n
29.172088420533
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
-21126988
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 21126989 can be divided by 4 positive divisors.
The sum of these divisors (counting 21126989) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000100101111101001101
3
Ternary
1110202100210002
4
Quaternary
1100211331031
5
Quinary
20402030424
6
Senary
2032454045
8
Octal
120457515
10
Decimal
21126989
12
Duodecimal
70aa325
16
Hexadecimal
1425f4d
20
Vigesimal
6c0h99
36
Base36
cktot
md5
c07a9c9a6e3f5c8ed5651ac1df89696c
sha1
727b87555539a97af51e9eb004b2690913ff4281
sha256
3913e6ea52784a0f4bdb833532c2486b69beeb1adb167c3b71df1f465446db45
sha512
044fe571278865ec1ee6b9e4baddcd0dada0f36404547d5c8399b940c3fa8e9aea38bee158da59fd4d121abde4c9f6a73d0593efdcf457350d4c37b0c4438d88
ripemd-160
b677852464031b09338a92b94a32051893fcb74f
Diameter
42253978
Circumference
132744786.86974
Area
1.4022488260022E+15
Volume
3.9500394029616E+22
Surface area
5.6089953040089E+15
Circumference
132744786.86974
Perimeter
84507956
Area
446349664206121
Diagonal
29878074.375907
Surface area
2678097985236726
Volume
9.4300244458364E+21
Space diagonal
36593018.358949
Perimeter
63380967
Area
1.9327507408658E+14
Altitude
18296509.179474
Surface area
1.9327507408658E+14
Volume
1.1113390387343E+21
Height
9959358.1253024