20921983 is an odd 8-digits composite number following 20921982
and preceding 20921984 . In scientific notation, it is written as 2.0921983 × 10^7.
The sum of its digits is 34. It has a total of 3 prime factors and 8 positive divisors.
There are 19284480 positive integers (up to 20921983) that are relatively prime to 20921983.
20921983 has 8 divisors, whose sum is 22619120
The reverse of 20921983 is 38912902
Previous prime number is 37
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
twenty million nine hundred twenty-one thousand nine hundred eighty-three
Scientific notation
2.0921983 × 10^7
Engineering notation
2.0921983 × 10^6
Prime Factorization
19 × 37 × 29761
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20921983
Product of the distinct prime numbers
The prime factorization of 20921983 is 19 × 37 × 29761.
Since it has a total of 3 prime factors.
7 , 6 , 17 , 7 , 469 , 631 , 4062 , 1311 , 21999 , 10175 , 406838 , 426474 , 1973815 , 500408 , 7706596 , 32366630 , 747091479 , 945956387 , 8955784526 , 8196085052
n×2
41843966
n×3
62765949
n×4
83687932
n×5
104609915
n÷2
10460991.5
n÷3
6973994.3333333
n÷3
5230495.75
n÷5
4184396.6
n2
437729372652289
n3
9.1581664932319E+21
n4
1.9160700368257E+29
n5
4.0087984737276E+36
2 √n
4574.0554216144
3 √n
275.55033813275
4 √n
67.631763407547
5 √n
29.115253044795
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
-20921982
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 20921983 can be divided by 8 positive divisors.
The sum of these divisors (counting 20921983) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001111110011111001111111
3
Ternary
1110100221120021
4
Quaternary
1033303321333
5
Quinary
20324000413
6
Senary
2024233011
8
Octal
117637177
10
Decimal
20921983
12
Duodecimal
700b767
16
Hexadecimal
13f3e7f
20
Vigesimal
6af4j3
36
Base36
cgfi7
md5
99c56627e23bf5702eb7ed415978b066
sha1
6e8fdbee8db9071e142eb6877ada57b73bb23497
sha256
6d357323aa9e241606dabaf4561b8b548908e7c3b5b50372763ae704cc2193ce
sha512
986b810b771335eef75a6b585221630e165a95118cd393f6346181cfd2833b5dc94664d5292a1a7c69f7c33f49dd150bb04f8c2e6196c756b15374181b7f4cd8
ripemd-160
6547ac65f296a754e96a7607516ca8bed62ad92f
Diameter
41843966
Circumference
131456696.18266
Area
1.3751673813849E+15
Volume
3.8361638100653E+22
Surface area
5.5006695255396E+15
Circumference
131456696.18266
Perimeter
83687932
Area
437729372652289
Diagonal
29588152.110339
Surface area
2626376235913734
Volume
9.1581664932319E+21
Space diagonal
36237937.551092
Perimeter
62765949
Area
1.8954237834975E+14
Altitude
18118968.775546
Surface area
1.8954237834975E+14
Volume
1.0793002717666E+21
Height
9862717.3701131