20051821 is an odd 8-digits composite number following 20051820
and preceding 20051822 . In scientific notation, it is written as 2.0051821 × 10^7.
The sum of its digits is 19. It has a total of 2 prime factors and 4 positive divisors.
There are 18996444 positive integers (up to 20051821) that are relatively prime to 20051821.
20051821 has 4 divisors, whose sum is 21107200
The reverse of 20051821 is 12815002
Previous prime number is 19
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 19
Digital Root 1
Name
twenty million fifty-one thousand eight hundred twenty-one
Scientific notation
2.0051821 × 10^7
Engineering notation
2.0051821 × 10^6
Prime Factorization
19 × 1055359
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20051821
Product of the distinct prime numbers
The prime factorization of 20051821 is 19 × 1055359.
Since it has a total of 2 prime factors.
7 , 9 , 13 , 93 , 873 , 29 , 3485 , 4476 , 42668 , 11179 , 673375 , 492002 , 2533382 , 1111802 , 15583012 , 70039831 , 538394501 , 410509829 , 5088022390 , 4861371128
n×2
40103642
n×3
60155463
n×4
80207284
n×5
100259105
n÷2
10025910.5
n÷3
6683940.3333333
n÷3
5012955.25
n÷5
4010364.2
n2
402075525416041
n3
8.0623464641234E+21
n4
1.6166472813859E+29
n5
3.2416721906486E+36
2 √n
4477.9259708039
3 √n
271.67599919429
4 √n
66.917306960187
5 √n
28.86893507556
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
-20051820
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 20051821 can be divided by 4 positive divisors.
The sum of these divisors (counting 20051821) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100011111011101101101
3
Ternary
1101201201221001
4
Quaternary
1030133131231
5
Quinary
20113124241
6
Senary
1553440301
8
Octal
114373555
10
Decimal
20051821
12
Duodecimal
6870091
16
Hexadecimal
131f76d
20
Vigesimal
6569b1
36
Base36
bxs31
md5
82a7c9b823487547b779010ce6a632d2
sha1
091418cbcbb43eee87adf58b212070e8ee40e3ea
sha256
8080c6a861366c047ed4cb0f2987c625451e02d83f0ba97dd8308ab1b90e3ad8
sha512
915aea607d87946725a0d6fe081d228e9d35dcfb91c1becf1f4eec7c9dca1b8a009b498ca7e34cfc9845a7e84a927e0f84dd18d58eece9b7562aa0c5c0c9be98
ripemd-160
ec6d3909fadc40d610f03a8a0cba643c2b5aaf21
Diameter
40103642
Circumference
125989307.0894
Area
1.2631575168353E+15
Volume
3.3771477896514E+22
Surface area
5.0526300673412E+15
Circumference
125989307.0894
Perimeter
80207284
Area
402075525416041
Diagonal
28357557.208478
Surface area
2412453152496246
Volume
8.0623464641234E+21
Space diagonal
34730772.756277
Perimeter
60155463
Area
1.7410380962513E+14
Altitude
17365386.378138
Surface area
1.7410380962513E+14
Volume
9.5015664284284E+20
Height
9452519.0694925