20804991 is an odd 8-digits composite number following 20804990
and preceding 20804992 . In scientific notation, it is written as 2.0804991 × 10^7.
The sum of its digits is 33. It has a total of 5 prime factors and 32 positive divisors.
There are 12440064 positive integers (up to 20804991) that are relatively prime to 20804991.
20804991 has 32 divisors, whose sum is 30792960
The reverse of 20804991 is 19940802
Previous prime number is 43
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6
Name
twenty million eight hundred four thousand nine hundred ninety-one
Scientific notation
2.0804991 × 10^7
Engineering notation
2.0804991 × 10^6
Prime Factorization
3 × 53 × 17 × 43 × 179
Composite number
ω
Distinct Factors
5
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
20804991
Product of the distinct prime numbers
The prime factorization of 20804991 is 3 × 53 × 17 × 43 × 179.
Since it has a total of 5 prime factors.
6 , 10 , 38 , 32 , 556 , 196 , 1211 , 9434 , 4662 , 40556 , 461503 , 847227 , 7712372 , 2131212 , 98880160 , 49564843 , 897307725 , 121706815 , 3665425281 , 6123793715
n×2
41609982
n×3
62414973
n×4
83219964
n×5
104024955
n÷2
10402495.5
n÷3
6934997
n÷3
5201247.75
n÷5
4160998.2
n2
432847650510081
n3
9.0053914732334E+21
n4
1.873570885521E+29
n5
3.8979625411126E+36
2 √n
4561.2488421484
3 √n
275.03576835028
4 √n
67.537018309579
5 √n
29.082618507165
1 , 3 , 17 , 43 , 51 , 53 , 129 , 159 , 179 , 537 , 731 , 901 , 2193 , 2279 , 2703 , 3043 , 6837 , 7697 , 9129 , 9487 , 23091 , 28461 , 38743 , 116229 , 130849 , 161279 , 392547 , 407941 , 483837 , 1223823 , 6934997 , 20804991
32 divisors
τ
Total Divisors
32
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20804990
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.03125
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
32
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20804991 can be divided by 32 positive divisors.
The sum of these divisors (counting 20804991) is 1, the average is 0.03125.
Base
System
Value
2
Binary
1001111010111010101111111
3
Ternary
1110011000002020
4
Quaternary
1033113111333
5
Quinary
20311224431
6
Senary
2021531223
8
Octal
117272577
10
Decimal
20804991
12
Duodecimal
6b73b13
16
Hexadecimal
13d757f
20
Vigesimal
6a0c9b
36
Base36
cdx8f
md5
6232126eaf2e2678b1611d6d1bbca7cf
sha1
ebd7610bd32d1867553bd16ae319219758d65a51
sha256
0ee9b1499f3f51f00d7e7afa753fff34bdb8e70e64e82727784274c2ce182ea6
sha512
72699718134c6e2c15d7c6525adbce1c6e5ede26c147ac4dc1e169887ad79f908d647b38594d5d96eb797edbfbc9ad4119124bc34486d1b9e24558b580171905
ripemd-160
c6f12dfc54b85a5e4da5cce423c56f06dcf0c615
Diameter
41609982
Circumference
130721613.7672
Area
1.3598309989661E+15
Volume
3.7721695593347E+22
Surface area
5.4393239958643E+15
Circumference
130721613.7672
Perimeter
83219964
Area
432847650510081
Diagonal
29422700.43725
Surface area
2597085903060486
Volume
9.0053914732334E+21
Space diagonal
36035301.463013
Perimeter
62414973
Area
1.8742853065507E+14
Altitude
18017650.731507
Surface area
1.8742853065507E+14
Volume
1.0612955629938E+21
Height
9807566.8124167