20191689 is an odd 8-digits composite number following 20191688
and preceding 20191690 . In scientific notation, it is written as 2.0191689 × 10^7.
The sum of its digits is 36. It has a total of 4 prime factors and 16 positive divisors.
There are 11389248 positive integers (up to 20191689) that are relatively prime to 20191689.
20191689 has 16 divisors, whose sum is 25971200
The reverse of 20191689 is 98619102
Previous prime number is 79
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9
Name
twenty million one hundred ninety-one thousand six hundred eighty-nine
Scientific notation
2.0191689 × 10^7
Engineering notation
2.0191689 × 10^6
Prime Factorization
9 × 7 × 79 × 4057
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
20191689
Product of the distinct prime numbers
The prime factorization of 20191689 is 9 × 7 × 79 × 4057.
Since it has a total of 4 prime factors.
3 , 5 , 60 , 43 , 407 , 601 , 2653 , 6835 , 48116 , 3065 , 886115 , 607482 , 511153 , 9576066 , 30923145 , 1154198 , 562066805 , 323835004 , 7479915012 , 7338804645
n×2
40383378
n×3
60575067
n×4
80766756
n×5
100958445
n÷2
10095844.5
n÷3
6730563
n÷3
5047922.25
n÷5
4038337.8
n2
407704304672721
n3
8.2322385239128E+21
n4
1.6622280004867E+29
n5
3.3563190832919E+36
2 √n
4493.5163291124
3 √n
272.30621241618
4 √n
67.033695475577
5 √n
28.909097223739
1 , 7 , 9 , 63 , 79 , 553 , 711 , 4057 , 4977 , 28399 , 36513 , 255591 , 320503 , 2243521 , 2884527 , 20191689
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20191688
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20191689 can be divided by 16 positive divisors.
The sum of these divisors (counting 20191689) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001101000001100111001001
3
Ternary
1101222211210100
4
Quaternary
1031001213021
5
Quinary
20132113224
6
Senary
2000440013
8
Octal
115014711
10
Decimal
20191689
12
Duodecimal
6919009
16
Hexadecimal
13419c9
20
Vigesimal
663j49
36
Base36
c0s09
md5
1e8a6aad8561472c1016a87cc2475b69
sha1
0838e9df7589ab878c7b7febe61d8fcec3bc7de9
sha256
a1fdf33e6f8111587a24d693e5a039e519881b73af7e07d0fa3ceff437da3279
sha512
efbe0b34869295be2112501ba1f6cd5be36857fff6bedb09cb9009e14c95bd408ce5b97c396e88ca4a5c1e0769c0b16e86776e433426d5587527b939484d83b7
ripemd-160
1338b6ab1ef52a0ac05be0afcccdd1b7ac8d809a
Diameter
40383378
Circumference
126868123.65194
Area
1.2808408483968E+15
Volume
3.4483120092431E+22
Surface area
5.123363393587E+15
Circumference
126868123.65194
Perimeter
80766756
Area
407704304672721
Diagonal
28555360.43102
Surface area
2446225828036326
Volume
8.2322385239128E+21
Space diagonal
34973031.23863
Perimeter
60575067
Area
1.7654114253942E+14
Altitude
17486515.619315
Surface area
1.7654114253942E+14
Volume
9.7017861410065E+20
Height
9518453.4770065