20921803 is an odd 8-digits composite number following 20921802
and preceding 20921804 . In scientific notation, it is written as 2.0921803 × 10^7.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 17594304 positive integers (up to 20921803) that are relatively prime to 20921803.
20921803 has 4 divisors, whose sum is 20978568
The reverse of 20921803 is 30812902
Previous prime number is 371
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty million nine hundred twenty-one thousand eight hundred three
Scientific notation
2.0921803 × 10^7
Engineering notation
2.0921803 × 10^6
Prime Factorization
371 × 56393
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20921803
Product of the distinct prime numbers
The prime factorization of 20921803 is 371 × 56393.
Since it has a total of 2 prime factors.
5 , 3 , 6 , 43 , 774 , 13 , 4760 , 537 , 8721 , 22353 , 854449 , 90471 , 2678838 , 9820405 , 61686074 , 4464351 , 727793865 , 242488564 , 6369798161 , 2604113401
n×2
41843606
n×3
62765409
n×4
83687212
n×5
104609015
n÷2
10460901.5
n÷3
6973934.3333333
n÷3
5230450.75
n÷5
4184360.6
n2
437721840770809
n3
9.1579301214042E+21
n4
1.9160040988779E+29
n5
4.0086260303915E+36
2 √n
4574.0357453785
3 √n
275.54954790805
4 √n
67.631617941452
5 √n
29.115202946642
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
-20921802
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 20921803 can be divided by 4 positive divisors.
The sum of these divisors (counting 20921803) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111110011110111001011
3
Ternary
1110100221022121
4
Quaternary
1033303313023
5
Quinary
20323444203
6
Senary
2024232111
8
Octal
117636713
10
Decimal
20921803
12
Duodecimal
700b637
16
Hexadecimal
13f3dcb
20
Vigesimal
6af4a3
36
Base36
cgfd7
md5
cc7310c2eac66eb53099c9c7caafc311
sha1
3c0c4afd4b49c221c79fdaa19bf12a474508d8fe
sha256
6c21a2441b95856bee9451a39e4d47a12d8d5459976946f9f6be96f48a2a9726
sha512
f928433f05c07983f1c8945a99781fddb127f46eefe7c5af381b91c8f648771a392591587a2c20da12c9ab6e3417610eeed5d387ded1dad0f0331b82a11a2457
ripemd-160
a169ac8886cd8b4c2bd821f6d7e4f7a266f8fa12
Diameter
41843606
Circumference
131455565.20931
Area
1.3751437192814E+15
Volume
3.8360647988656E+22
Surface area
5.5005748771255E+15
Circumference
131455565.20931
Perimeter
83687212
Area
437721840770809
Diagonal
29587897.551898
Surface area
2626331044624854
Volume
9.1579301214042E+21
Space diagonal
36237625.781947
Perimeter
62765409
Area
1.895391169494E+14
Altitude
18118812.890973
Surface area
1.895391169494E+14
Volume
1.0792724150796E+21
Height
9862632.5172994