20020821 is an odd 8-digits composite number following 20020820
and preceding 20020822 . In scientific notation, it is written as 2.0020821 × 10^7.
The sum of its digits is 15. It has a total of 2 prime factors and 4 positive divisors.
There are 13347212 positive integers (up to 20020821) that are relatively prime to 20020821.
20020821 has 4 divisors, whose sum is 26694432
The reverse of 20020821 is 12802002
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 15
Digital Root 6
Name
twenty million twenty thousand eight hundred twenty-one
Scientific notation
2.0020821 × 10^7
Engineering notation
2.0020821 × 10^6
Prime Factorization
3 × 6673607
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20020821
Product of the distinct prime numbers
The prime factorization of 20020821 is 3 × 6673607.
Since it has a total of 2 prime factors.
10 , 9 , 7 , 51 , 255 , 320 , 3364 , 143 , 69794 , 15196 , 534672 , 678808 , 3202086 , 3914540 , 6352757 , 87941240 , 838199089 , 847890615 , 5885615237 , 7674846582
n×2
40041642
n×3
60062463
n×4
80083284
n×5
100104105
n÷2
10010410.5
n÷3
6673607
n÷3
5005205.25
n÷5
4004164.2
n2
400833273514041
n3
8.0250112198687E+21
n4
1.6066731315598E+29
n5
3.2166915172469E+36
2 √n
4474.4632080284
3 √n
271.53592380654
4 √n
66.891428509402
5 √n
28.860003308931
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20020820
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20020821 can be divided by 4 positive divisors.
The sum of these divisors (counting 20020821) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100010111111001010101
3
Ternary
1101200011101220
4
Quaternary
1030113321111
5
Quinary
20111131241
6
Senary
1553040553
8
Octal
114277125
10
Decimal
20020821
12
Duodecimal
6856159
16
Hexadecimal
1317e55
20
Vigesimal
652c11
36
Base36
bx45x
md5
d9e305e14fd6b306e71a36cc9f5e0be7
sha1
c0e7f23556d273488fe7aa99ec6bb7385ac47e3b
sha256
0ba6f11fff9e7ebf5fd1583971ffb9cb545fc96d1813241913c4bc3ee6e2ab8c
sha512
5575e905ef9f23a0ca1ff07812b6f79322ac03818f467730d586f93cd0c5bc947f03264f5d519d2243d29ce81c44494edb2ebba93635d09d5b81ab816e6581f0
ripemd-160
d6782ab34aaf8010cf9f37ee4561584e448d6f28
Diameter
40041642
Circumference
125794528.34487
Area
1.2592548673861E+15
Volume
3.3615088391087E+22
Surface area
5.0370194695442E+15
Circumference
125794528.34487
Perimeter
80083284
Area
400833273514041
Diagonal
28313716.588044
Surface area
2404999641084246
Volume
8.0250112198687E+21
Space diagonal
34677079.181242
Perimeter
60062463
Area
1.7356589877262E+14
Altitude
17338539.590621
Surface area
1.7356589877262E+14
Volume
9.4575664211121E+20
Height
9437905.529348