20998421 is an odd 8-digits composite number following 20998420
and preceding 20998422 . In scientific notation, it is written as 2.0998421 × 10^7.
The sum of its digits is 35. It has a total of 2 prime factors and 4 positive divisors.
There are 20857344 positive integers (up to 20998421) that are relatively prime to 20998421.
20998421 has 4 divisors, whose sum is 21139500
The reverse of 20998421 is 12489902
Previous prime number is 149
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 35
Digital Root 8
Name
twenty million nine hundred ninety-eight thousand four hundred twenty-one
Scientific notation
2.0998421 × 10^7
Engineering notation
2.0998421 × 10^6
Prime Factorization
149 × 140929
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20998421
Product of the distinct prime numbers
The prime factorization of 20998421 is 149 × 140929.
Since it has a total of 2 prime factors.
6 , 7 , 21 , 29 , 469 , 259 , 6495 , 2413 , 66445 , 99671 , 80854 , 750856 , 7064572 , 7514636 , 81076859 , 55138151 , 448239085 , 755245586 , 8086306293 , 6445802436
n×2
41996842
n×3
62995263
n×4
83993684
n×5
104992105
n÷2
10499210.5
n÷3
6999473.6666667
n÷3
5249605.25
n÷5
4199684.2
n2
440933684493241
n3
9.2589111400702E+21
n4
1.9442251412078E+29
n5
4.0825658033867E+36
2 √n
4582.4034086929
3 √n
275.88550263738
4 √n
67.693451741604
5 √n
29.136496408586
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
-20998420
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 20998421 can be divided by 4 positive divisors.
The sum of these divisors (counting 20998421) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000000110100100010101
3
Ternary
1110111211102022
4
Quaternary
1100012210111
5
Quinary
20333422141
6
Senary
2030022525
8
Octal
120064425
10
Decimal
20998421
12
Duodecimal
7047a45
16
Hexadecimal
1406915
20
Vigesimal
6b4g11
36
Base36
ci2hh
md5
190f34e8a42ff7612d91a6ab42046159
sha1
e3cf36c30f279bcc7461e247d4d7ba8b70cf03a2
sha256
086e5f85ba5c4647ed7a84a756db644b31f8a09d12b4ebf4ec7333a337c733cf
sha512
4079ce22d19e786242a2fdcfab63dd39f90d2ef3562f8a2297116074d9b3bf8d3c91b666d02ba4949869ec0db509022a085469a35205a0b6dd18a375a63762e9
ripemd-160
b4a19d621bd5cb90e39a9db9acaeffc6932495d3
Diameter
41996842
Circumference
131936970.30117
Area
1.3852340239242E+15
Volume
3.8783636290514E+22
Surface area
5.540936095697E+15
Circumference
131936970.30117
Perimeter
83993684
Area
440933684493241
Diagonal
29696251.76662
Surface area
2645602106959446
Volume
9.2589111400702E+21
Space diagonal
36370332.050721
Perimeter
62995263
Area
1.9092988607771E+14
Altitude
18185166.025361
Surface area
1.9092988607771E+14
Volume
1.0911731422579E+21
Height
9898750.5888733