20804821 is an odd 8-digits composite number following 20804820
and preceding 20804822 . In scientific notation, it is written as 2.0804821 × 10^7.
The sum of its digits is 25. It has a total of 4 prime factors and 12 positive divisors.
There are 19427328 positive integers (up to 20804821) that are relatively prime to 20804821.
20804821 has 12 divisors, whose sum is 22274692
The reverse of 20804821 is 12840802
Previous prime number is 17
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty million eight hundred four thousand eight hundred twenty-one
Scientific notation
2.0804821 × 10^7
Engineering notation
2.0804821 × 10^6
Prime Factorization
17 × 193 × 17 × 373
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
1223813
Product of the distinct prime numbers
The prime factorization of 20804821 is 17 × 193 × 17 × 373.
Since it has a total of 4 prime factors.
8 , 8 , 37 , 8 , 404 , 670 , 6772 , 285 , 24513 , 9744 , 564843 , 220099 , 9001950 , 4059154 , 39781950 , 18386010 , 695684645 , 248412503 , 4338483395 , 9302512349
n×2
41609642
n×3
62414463
n×4
83219284
n×5
104024105
n÷2
10402410.5
n÷3
6934940.3333333
n÷3
5201205.25
n÷5
4160964.2
n2
432840576842041
n3
9.0051707227354E+21
n4
1.8735096496095E+29
n5
3.8978032901899E+36
2 √n
4561.2302068631
3 √n
275.03501923183
4 √n
67.536880345949
5 √n
29.082570979518
1 , 17 , 193 , 289 , 373 , 3281 , 6341 , 55777 , 71989 , 107797 , 1223813 , 20804821
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20804820
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20804821 can be divided by 12 positive divisors.
The sum of these divisors (counting 20804821) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1001111010111010011010101
3
Ternary
1110010222211221
4
Quaternary
1033113103111
5
Quinary
20311223241
6
Senary
2021530341
8
Octal
117272325
10
Decimal
20804821
12
Duodecimal
6b739b1
16
Hexadecimal
13d74d5
20
Vigesimal
6a0c11
36
Base36
cdx3p
md5
d957927fdf59ad92766aa827c0cf81d7
sha1
a4c33661380ce54f7b377fac61dfe02a247d14b8
sha256
e5b8f24df6fa5efa9ea026aa10b91caff373e9422f001a290523231367fa758e
sha512
0c9a840608fb24ae63473f43c5294714aa5a8613d1438f3aeb0a09960fa1122978898261e64365b75dc48a06e44b73bf1317c0e7346c38f6b2d02c655ae96585
ripemd-160
2420f25823895a2921dab68831b7529bb5a69f5e
Diameter
41609642
Circumference
130720545.6257
Area
1.3598087763825E+15
Volume
3.7720770915823E+22
Surface area
5.4392351055301E+15
Circumference
130720545.6257
Perimeter
83219284
Area
432840576842041
Diagonal
29422460.020945
Surface area
2597043461052246
Volume
9.0051707227354E+21
Space diagonal
36035007.014376
Perimeter
62414463
Area
1.8742546766696E+14
Altitude
18017503.507188
Surface area
1.8742546766696E+14
Volume
1.0612695472981E+21
Height
9807486.6736482