20921243 is an odd 8-digits composite number following 20921242
and preceding 20921244 . In scientific notation, it is written as 2.0921243 × 10^7.
The sum of its digits is 23. It has a total of 2 prime factors and 4 positive divisors.
There are 17447616 positive integers (up to 20921243) that are relatively prime to 20921243.
20921243 has 4 divisors, whose sum is 21002280
The reverse of 20921243 is 34212902
Previous prime number is 259
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5
Name
twenty million nine hundred twenty-one thousand two hundred forty-three
Scientific notation
2.0921243 × 10^7
Engineering notation
2.0921243 × 10^6
Prime Factorization
259 × 80777
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20921243
Product of the distinct prime numbers
The prime factorization of 20921243 is 259 × 80777.
Since it has a total of 2 prime factors.
8 , 1 , 65 , 40 , 115 , 238 , 9579 , 1694 , 42037 , 4139 , 918885 , 842594 , 2033993 , 7814400 , 66391888 , 80835737 , 204753417 , 522802584 , 8770676425 , 9108744889
n×2
41842486
n×3
62763729
n×4
83684972
n×5
104606215
n÷2
10460621.5
n÷3
6973747.6666667
n÷3
5230310.75
n÷5
4184248.6
n2
437698408665049
n3
9.1571947683948E+21
n4
1.9157989694792E+29
n5
4.0080895779623E+36
2 √n
4573.974529881
3 √n
275.54708940223
4 √n
67.631165374264
5 √n
29.115047083514
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
-20921242
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 20921243 can be divided by 4 positive divisors.
The sum of these divisors (counting 20921243) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111110011101110011011
3
Ternary
1110100220112212
4
Quaternary
1033303232123
5
Quinary
20323434433
6
Senary
2024225335
8
Octal
117635633
10
Decimal
20921243
12
Duodecimal
700b24b
16
Hexadecimal
13f3b9b
20
Vigesimal
6af323
36
Base36
cgexn
md5
d4ce1b7b905849b4ce2d46d725609715
sha1
fe9df70178ac107c86e4f87014023fc426824457
sha256
9e9a6fdd3ee6888cd67251d83bbd8ed1e57b22b232a55829b75c9504e6e2ec57
sha512
01abe69d4e46c0ed4f2ac9ad0f3d855f29bafe63a900dc01ccf7de51a0cb3e6da30ff6616e1743dc1cbf70256145b21e514e19bac863c37dc355a8d9cd610bbe
ripemd-160
e9087ec744230cc6fbd98213f78bc04daed4f00c
Diameter
41842486
Circumference
131452046.62553
Area
1.3750701051501E+15
Volume
3.8357567749173E+22
Surface area
5.5002804206002E+15
Circumference
131452046.62553
Perimeter
83684972
Area
437698408665049
Diagonal
29587105.592303
Surface area
2626190451990294
Volume
9.1571947683948E+21
Space diagonal
36236655.833495
Perimeter
62763729
Area
1.8952897054998E+14
Altitude
18118327.916747
Surface area
1.8952897054998E+14
Volume
1.0791857528963E+21
Height
9862368.5307677