21609989 is an odd 8-digits composite number following 21609988
and preceding 21609990 . In scientific notation, it is written as 2.1609989 × 10^7.
The sum of its digits is 44. It has a total of 3 prime factors and 8 positive divisors.
There are 20789056 positive integers (up to 21609989) that are relatively prime to 21609989.
21609989 has 8 divisors, whose sum is 22446720
The reverse of 21609989 is 98990612
Previous prime number is 47
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 44
Digital Root 8
Name
twenty-one million six hundred nine thousand nine hundred eighty-nine
Scientific notation
2.1609989 × 10^7
Engineering notation
2.1609989 × 10^6
Prime Factorization
59 × 47 × 7793
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21609989
Product of the distinct prime numbers
The prime factorization of 21609989 is 59 × 47 × 7793.
Since it has a total of 3 prime factors.
4 , 8 , 46 , 34 , 618 , 787 , 282 , 7724 , 76241 , 60931 , 648607 , 495575 , 7288695 , 2678114 , 93005012 , 43181430 , 519582384 , 20183307 , 327938216 , 9894226825
n×2
43219978
n×3
64829967
n×4
86439956
n×5
108049945
n÷2
10804994.5
n÷3
7203329.6666667
n÷3
5402497.25
n÷5
4321997.8
n2
466991624580121
n3
1.0091683870269E+22
n4
2.1808117742798E+29
n5
4.7127318453257E+36
2 √n
4648.6545365299
3 √n
278.53825379964
4 √n
68.181042354381
5 √n
29.304270137689
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
-21609988
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 21609989 can be divided by 8 positive divisors.
The sum of these divisors (counting 21609989) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010011011111000000101
3
Ternary
1111122220022222
4
Quaternary
1102123320011
5
Quinary
21013004424
6
Senary
2051102125
8
Octal
122337005
10
Decimal
21609989
12
Duodecimal
72a1945
16
Hexadecimal
149be05
20
Vigesimal
6f14j9
36
Base36
cv6dh
md5
6c36d29013088774c23dffad65d3b93e
sha1
75f2cdeead56ae1f983caea63252ea5f3e8efe38
sha256
4e3f1d351d8eca13319929ffb682af77848b9fe7d50883cd8b6d3f911d374fbf
sha512
54749ac36b792f5bed75e77f07db6ca0aaff72d5cd5a8a9c48b16e620d88563f4f49d44864ddc035564426506bf48b8585810f693c5667d5c9400be9126d0056
ripemd-160
87397735483da9e5423c38c9a35f643e743b83d3
Diameter
43219978
Circumference
135779565.37311
Area
1.4670974570689E+15
Volume
4.2271946545582E+22
Surface area
5.8683898282755E+15
Circumference
135779565.37311
Perimeter
86439956
Area
466991624580121
Diagonal
30561139.526533
Surface area
2801949747480726
Volume
1.0091683870269E+22
Space diagonal
37429598.899005
Perimeter
64829967
Area
2.0221330512048E+14
Altitude
18714799.449502
Surface area
2.0221330512048E+14
Volume
1.1893163497096E+21
Height
10187046.508844