20991693 is an odd 8-digits composite number following 20991692
and preceding 20991694 . In scientific notation, it is written as 2.0991693 × 10^7.
The sum of its digits is 39. It has a total of 2 prime factors and 4 positive divisors.
There are 13994460 positive integers (up to 20991693) that are relatively prime to 20991693.
20991693 has 4 divisors, whose sum is 27988928
The reverse of 20991693 is 39619902
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3
Name
twenty million nine hundred ninety-one thousand six hundred ninety-three
Scientific notation
2.0991693 × 10^7
Engineering notation
2.0991693 × 10^6
Prime Factorization
3 × 6997231
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20991693
Product of the distinct prime numbers
The prime factorization of 20991693 is 3 × 6997231.
Since it has a total of 2 prime factors.
9 , 8 , 60 , 18 , 520 , 581 , 6393 , 4452 , 80884 , 81155 , 237111 , 293344 , 529766 , 3580071 , 88135477 , 52775053 , 741296309 , 468012435 , 8158387689 , 5624925059
n×2
41983386
n×3
62975079
n×4
83966772
n×5
104958465
n÷2
10495846.5
n÷3
6997231
n÷3
5247923.25
n÷5
4198338.6
n2
440651175006249
n3
9.2500141858205E+21
n4
1.9417345803439E+29
n5
4.0760296198063E+36
2 √n
4581.6692372977
3 √n
275.85603445438
4 √n
67.688028759137
5 √n
29.134629073167
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
-20991692
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 20991693 can be divided by 4 positive divisors.
The sum of these divisors (counting 20991693) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000000100111011001101
3
Ternary
1110111111012010
4
Quaternary
1100010323031
5
Quinary
20333213233
6
Senary
2025531433
8
Octal
120047315
10
Decimal
20991693
12
Duodecimal
7043b79
16
Hexadecimal
1404ecd
20
Vigesimal
6b3j4d
36
Base36
chxal
md5
ca0e0f694f8a1da656e39f05ca43047b
sha1
0b4806acafaef12ec1d09511fc1e5719a0f7ac34
sha256
6f07a261d96b9ed3cf9fcc528b7ea870e2659687f777b74374b859c6ed28d8d2
sha512
2ffbb8db91bdef9147c291fc143793cd83018a71c8809783b50f20d8fa3d3ee96f5b8e0d067e9aace80bee2da3c92f219d78bbe1a0d030dc84e8842240f83e24
ripemd-160
9e8f901c907e673917e941ac866ecf391829a408
Diameter
41983386
Circumference
131894697.03042
Area
1.3843464941953E+15
Volume
3.87463688157E+22
Surface area
5.5373859767814E+15
Circumference
131894697.03042
Perimeter
83966772
Area
440651175006249
Diagonal
29686736.937772
Surface area
2643907050037494
Volume
9.2500141858205E+21
Space diagonal
36358678.812888
Perimeter
62975079
Area
1.9080755588144E+14
Altitude
18179339.406444
Surface area
1.9080755588144E+14
Volume
1.0901246261442E+21
Height
9895578.9792575