20998909 is an odd 8-digits prime number following 20998908
and preceding 20998910 . In scientific notation, it is written as 2.0998909 × 10^7.
The sum of its digits is 46. It has a total of 1 prime factors and 2 positive divisors.
There are 20998908 positive integers (up to 20998909) that are relatively prime to 20998909.
20998909 has 2 divisors, whose sum is 20998910
The reverse of 20998909 is 90989902
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 46
Digital Root 1
Name
twenty million nine hundred ninety-eight thousand nine hundred nine
Scientific notation
2.0998909 × 10^7
Engineering notation
2.0998909 × 10^6
Prime Factorization
20998909
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
20998909
Product of the distinct prime numbers
The prime factorization of 20998909 is 20998909.
Since it has a total of 1 prime factors.
6 , 10 , 66 , 3 , 827 , 22 , 7839 , 4382 , 16783 , 85194 , 808716 , 331690 , 7105800 , 3144438 , 1349983 , 13340849 , 198137884 , 802100674 , 512180219 , 1573550325
n×2
41997818
n×3
62996727
n×4
83995636
n×5
104994545
n÷2
10499454.5
n÷3
6999636.3333333
n÷3
5249727.25
n÷5
4199781.8
n2
440954179190281
n3
9.2595566819864E+21
n4
1.9444058814537E+29
n5
4.0830402163712E+36
2 √n
4582.4566555506
3 √n
275.88763979938
4 √n
67.693845034468
5 √n
29.136631832845
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
20998910
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10499455
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4582.4567646624
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.999999904757
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20998909 can be divided by 2 positive divisors.
The sum of these divisors (counting 20998909) is 20998910, the average is 10499455.
Base
System
Value
2
Binary
1010000000110101011111101
3
Ternary
1110111212002101
4
Quaternary
1100012223331
5
Quinary
20333431114
6
Senary
2030025101
8
Octal
120065375
10
Decimal
20998909
12
Duodecimal
7048191
16
Hexadecimal
1406afd
20
Vigesimal
6b4h59
36
Base36
ci2v1
md5
c4c0e9eb23db95c3961cf6a188249190
sha1
d8e7c779a12d13e7e0b581ff24ed689dbfba3576
sha256
39530ffd2b6cc1ef01bdacdfa8566f5c11a75389244226ba0dd4b9a86ed9efa4
sha512
c5633f4197edb467777aa3a9841b3ef20168f8cf157bbd274ceaac77dcfda0ae4e3523333facde7a9024cda82f28cd84c0dbd311803ba0ffc2014b11872a95d3
ripemd-160
cf44bae530b600a6f2f480f697648c8ce258683f
Diameter
41997818
Circumference
131940036.4956
Area
1.3852984099139E+15
Volume
3.8786340330169E+22
Surface area
5.5411936396556E+15
Circumference
131940036.4956
Perimeter
83995636
Area
440954179190281
Diagonal
29696941.902838
Surface area
2645725075141686
Volume
9.2595566819864E+21
Space diagonal
36371177.291515
Perimeter
62996727
Area
1.9093876054185E+14
Altitude
18185588.645758
Surface area
1.9093876054185E+14
Volume
1.0912492201023E+21
Height
9898980.6342795