20681789 is an odd 8-digits composite number following 20681788
and preceding 20681790 . In scientific notation, it is written as 2.0681789 × 10^7.
The sum of its digits is 41. It has a total of 2 prime factors and 4 positive divisors.
There are 20653500 positive integers (up to 20681789) that are relatively prime to 20681789.
20681789 has 4 divisors, whose sum is 20710080
The reverse of 20681789 is 98718602
Previous prime number is 751
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 41
Digital Root 5
Name
twenty million six hundred eighty-one thousand seven hundred eighty-nine
Scientific notation
2.0681789 × 10^7
Engineering notation
2.0681789 × 10^6
Prime Factorization
751 × 27539
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20681789
Product of the distinct prime numbers
The prime factorization of 20681789 is 751 × 27539.
Since it has a total of 2 prime factors.
4 , 3 , 48 , 44 , 873 , 947 , 1921 , 1407 , 61246 , 17443 , 982182 , 496126 , 3949303 , 261298 , 38536289 , 40210457 , 802240345 , 307248262 , 4128753928 , 3270108410
n×2
41363578
n×3
62045367
n×4
82727156
n×5
103408945
n÷2
10340894.5
n÷3
6893929.6666667
n÷3
5170447.25
n÷5
4136357.8
n2
427736396240521
n3
8.8463538946668E+21
n4
1.8295842466883E+29
n5
3.7839075347731E+36
2 √n
4547.723496432
3 √n
274.49179529183
4 √n
67.436811137776
5 √n
29.04809261683
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
-20681788
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 20681789 can be divided by 4 positive divisors.
The sum of these divisors (counting 20681789) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001110111001010000111101
3
Ternary
1102220202002012
4
Quaternary
1032321100331
5
Quinary
20243304124
6
Senary
2015141005
8
Octal
116712075
10
Decimal
20681789
12
Duodecimal
6b14765
16
Hexadecimal
13b943d
20
Vigesimal
695499
36
Base36
cba65
md5
041c9a8fccf72e3ce059862830685ea7
sha1
dd0178ac085e7f452206f0a220f3680313f46341
sha256
b916efc70c3da74edd841b17eb3007519f4f87003d6bd78ec82cfed9b703e521
sha512
d5a68fb35a242ebc245d606aeac18655ee4d2a5338720eff366a7d1e57d933bffda57728e0245fe28f93b2ad42d4b3ab6b5909614b7f2c8d6fa5e72f76ea4563
ripemd-160
0d06696f0fc85a1bfb7ef7ef25d2ebf06f1f72ef
Diameter
41363578
Circumference
129947512.77099
Area
1.3437735201022E+15
Volume
3.7055520542054E+22
Surface area
5.3750940804088E+15
Circumference
129947512.77099
Perimeter
82727156
Area
427736396240521
Diagonal
29248466.497939
Surface area
2566418377443126
Volume
8.8463538946668E+21
Space diagonal
35821909.339419
Perimeter
62045367
Area
1.8521529263375E+14
Altitude
17910954.66971
Surface area
1.8521529263375E+14
Volume
1.0425528046158E+21
Height
9749488.8326462