20921211 is an odd 8-digits composite number following 20921210
and preceding 20921212 . In scientific notation, it is written as 2.0921211 × 10^7.
The sum of its digits is 18. It has a total of 3 prime factors and 8 positive divisors.
There are 13885200 positive integers (up to 20921211) that are relatively prime to 20921211.
20921211 has 8 divisors, whose sum is 23349600
The reverse of 20921211 is 11212902
Previous prime number is 229
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 18
Digital Root 9
Name
twenty million nine hundred twenty-one thousand two hundred eleven
Scientific notation
2.0921211 × 10^7
Engineering notation
2.0921211 × 10^6
Prime Factorization
9 × 229 × 10151
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20921211
Product of the distinct prime numbers
The prime factorization of 20921211 is 9 × 229 × 10151.
Since it has a total of 3 prime factors.
7 , 1 , 91 , 28 , 370 , 664 , 1679 , 3267 , 65883 , 24751 , 770252 , 621307 , 8341615 , 1147006 , 18069644 , 91285710 , 487469082 , 706781128 , 4273904064 , 3608964923
n×2
41842422
n×3
62763633
n×4
83684844
n×5
104606055
n÷2
10460605.5
n÷3
6973737
n÷3
5230302.75
n÷5
4184242.2
n2
437697069706521
n3
9.1571527494118E+21
n4
1.9157872482968E+29
n5
4.0080589252726E+36
2 √n
4573.9710318278
3 √n
275.54694891486
4 √n
67.631139513007
5 √n
29.115038176949
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
-20921210
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 20921211 can be divided by 8 positive divisors.
The sum of these divisors (counting 20921211) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001111110011101101111011
3
Ternary
1110100220111200
4
Quaternary
1033303231323
5
Quinary
20323434321
6
Senary
2024225243
8
Octal
117635573
10
Decimal
20921211
12
Duodecimal
700b223
16
Hexadecimal
13f3b7b
20
Vigesimal
6af30b
36
Base36
cgewr
md5
3f52418233baaf72f2504bbb32a81cfb
sha1
3b3a73546230f8eeaf70ea702688d39cf508cc22
sha256
a713f0773deaae3be8a59c3c3db42d0c3c7b7bbb12dd51d34f5af05457716bef
sha512
88bcc1023f75c0732b6c80b978b916c3884ffb0a37918a695a00ad319f88d2ca0fba03e4be5540ef05a7d761e86d327acecde8683edfd13d4b4654341f07627d
ripemd-160
82a30804c3b261da6ee3993b33669f4c68a3bca6
Diameter
41842422
Circumference
131451845.5636
Area
1.3750658986878E+15
Volume
3.8357391740469E+22
Surface area
5.5002635947511E+15
Circumference
131451845.5636
Perimeter
83684844
Area
437697069706521
Diagonal
29587060.337469
Surface area
2626182418239126
Volume
9.1571527494118E+21
Space diagonal
36236600.407869
Perimeter
62763633
Area
1.8952839076393E+14
Altitude
18118300.203934
Surface area
1.8952839076393E+14
Volume
1.0791808009117E+21
Height
9862353.4458231