20991331 is an odd 8-digits composite number following 20991330
and preceding 20991332 . In scientific notation, it is written as 2.0991331 × 10^7.
The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors.
There are 20267464 positive integers (up to 20991331) that are relatively prime to 20991331.
20991331 has 4 divisors, whose sum is 21715200
The reverse of 20991331 is 13319902
Previous prime number is 29
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty million nine hundred ninety-one thousand three hundred thirty-one
Scientific notation
2.0991331 × 10^7
Engineering notation
2.0991331 × 10^6
Prime Factorization
29 × 723839
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20991331
Product of the distinct prime numbers
The prime factorization of 20991331 is 29 × 723839.
Since it has a total of 2 prime factors.
10 , 4 , 8 , 58 , 959 , 446 , 3135 , 5328 , 11186 , 33672 , 538068 , 918313 , 1563603 , 6133497 , 59640968 , 50173208 , 610445919 , 54923346 , 6584434255 , 9559499226
n×2
41982662
n×3
62973993
n×4
83965324
n×5
104956655
n÷2
10495665.5
n÷3
6997110.3333333
n÷3
5247832.75
n÷5
4198266.2
n2
440635977151561
n3
9.2495356468969E+21
n4
1.9416006436031E+29
n5
4.0756781779686E+36
2 √n
4581.6297318749
3 √n
275.85444874048
4 √n
67.687736938643
5 √n
29.134528587623
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
-20991330
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 20991331 can be divided by 4 positive divisors.
The sum of these divisors (counting 20991331) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000000100110101100011
3
Ternary
1110111110200201
4
Quaternary
1100010311203
5
Quinary
20333210311
6
Senary
2025530031
8
Octal
120046543
10
Decimal
20991331
12
Duodecimal
7043917
16
Hexadecimal
1404d63
20
Vigesimal
6b3i6b
36
Base36
chx0j
md5
8a5ffd4a5286b61853f96fc2b3f64d80
sha1
7f58c60944c9a522fbe7a54ddde099fcf196b410
sha256
354f70a424f404bc3f88d91bf26da1b55171509a0f56c295488915f093bfc037
sha512
f1bd14c7ab7e912d383d9908ecf6a15882d7eff4b019b78aeff32e8f14a11e4fb7fbed43326d90c0d216259059bd639c732770bee8efa6892af9154e9d136cf5
ripemd-160
5a5318b3ad8bde43dfce7b316a422e543bf2cfb6
Diameter
41982662
Circumference
131892422.51734
Area
1.3842987487267E+15
Volume
3.8744364316544E+22
Surface area
5.5371949949068E+15
Circumference
131892422.51734
Perimeter
83965324
Area
440635977151561
Diagonal
29686224.992463
Surface area
2643815862909366
Volume
9.2495356468969E+21
Space diagonal
36358051.810496
Perimeter
62973993
Area
1.9080097501732E+14
Altitude
18179025.905248
Surface area
1.9080097501732E+14
Volume
1.0900682297912E+21
Height
9895408.3308209