20921371 is an odd 8-digits prime number following 20921370
and preceding 20921372 . In scientific notation, it is written as 2.0921371 × 10^7.
The sum of its digits is 25. It has a total of 1 prime factors and 2 positive divisors.
There are 20921370 positive integers (up to 20921371) that are relatively prime to 20921371.
20921371 has 2 divisors, whose sum is 20921372
The reverse of 20921371 is 17312902
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty million nine hundred twenty-one thousand three hundred seventy-one
Scientific notation
2.0921371 × 10^7
Engineering notation
2.0921371 × 10^6
Prime Factorization
20921371
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
20921371
Product of the distinct prime numbers
The prime factorization of 20921371 is 20921371.
Since it has a total of 1 prime factors.
2 , 8 , 86 , 26 , 293 , 254 , 6779 , 768 , 65752 , 46220 , 707532 , 881741 , 6039011 , 7689660 , 10714421 , 42905516 , 743555616 , 361805604 , 2926862207 , 9406709708
n×2
41842742
n×3
62764113
n×4
83685484
n×5
104606855
n÷2
10460685.5
n÷3
6973790.3333333
n÷3
5230342.75
n÷5
4184274.2
n2
437703764519641
n3
9.157362845612E+21
n4
1.9158458547467E+29
n5
4.0082121905967E+36
2 √n
4573.9885220669
3 √n
275.54765135029
4 √n
67.631268818993
5 √n
29.115082709666
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
20921372
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10460686
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4573.9886313807
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.999999904404
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20921371 can be divided by 2 positive divisors.
The sum of these divisors (counting 20921371) is 20921372, the average is 10460686.
Base
System
Value
2
Binary
1001111110011110000011011
3
Ternary
1110100220201121
4
Quaternary
1033303300123
5
Quinary
20323440441
6
Senary
2024230111
8
Octal
117636033
10
Decimal
20921371
12
Duodecimal
700b337
16
Hexadecimal
13f3c1b
20
Vigesimal
6af38b
36
Base36
cgf17
md5
c8c6cbfc4dd00136a53bc063c3c4eed1
sha1
99be800dc390b2ed918fee39b7209fcdbe702e14
sha256
f39387606a537458ea113dec5256944ab9e9908f9d5aeb38030db88c22d6c12d
sha512
c134627c2ea58c60c440a98f9e966777eed2e12a7b5e7a7c3dcbbaf13e8c04129cae579defdeac8d000c08f9f357eb60534538ae8634fc7866355cbacf854e91
ripemd-160
98fb7ad8c0d2f3a89fb7ac6331c728482b3fc7f5
Diameter
41842742
Circumference
131452850.87325
Area
1.3750869310635E+15
Volume
3.8358271789375E+22
Surface area
5.500347724254E+15
Circumference
131452850.87325
Perimeter
83685484
Area
437703764519641
Diagonal
29587286.611639
Surface area
2626222587117846
Volume
9.157362845612E+21
Space diagonal
36236877.535998
Perimeter
62764113
Area
1.8953128970305E+14
Altitude
18118438.767999
Surface area
1.8953128970305E+14
Volume
1.0792055609863E+21
Height
9862428.8705464