20685021 is an odd 8-digits composite number following 20685020
and preceding 20685022 . In scientific notation, it is written as 2.0685021 × 10^7.
The sum of its digits is 24. It has a total of 4 prime factors and 16 positive divisors.
There are 11544624 positive integers (up to 20685021) that are relatively prime to 20685021.
20685021 has 16 divisors, whose sum is 32254464
The reverse of 20685021 is 12058602
Previous prime number is 43
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 24
Digital Root 6
Name
twenty million six hundred eighty-five thousand twenty-one
Scientific notation
2.0685021 × 10^7
Engineering notation
2.0685021 × 10^6
Prime Factorization
3 × 7 × 43 × 22907
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
20685021
Product of the distinct prime numbers
The prime factorization of 20685021 is 3 × 7 × 43 × 22907.
Since it has a total of 4 prime factors.
2 , 6 , 39 , 32 , 664 , 395 , 586 , 8087 , 76484 , 44445 , 664364 , 194517 , 2706858 , 7043614 , 11665399 , 70848185 , 112575998 , 303114703 , 2308919140 , 9332239764
n×2
41370042
n×3
62055063
n×4
82740084
n×5
103425105
n÷2
10342510.5
n÷3
6895007
n÷3
5171255.25
n÷5
4137004.2
n2
427870093770441
n3
8.8505018749135E+21
n4
1.8307281714313E+29
n5
3.7868650671347E+36
2 √n
4548.0788251744
3 √n
274.50609307612
4 √n
67.439445617342
5 √n
29.049000445136
1 , 3 , 7 , 21 , 43 , 129 , 301 , 903 , 22907 , 68721 , 160349 , 481047 , 985001 , 2955003 , 6895007 , 20685021
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
-20685020
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 20685021 can be divided by 16 positive divisors.
The sum of these divisors (counting 20685021) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001110111010000011011101
3
Ternary
1102220220111220
4
Quaternary
1032322003131
5
Quinary
20243410041
6
Senary
2015203553
8
Octal
116720335
10
Decimal
20685021
12
Duodecimal
6b165b9
16
Hexadecimal
13ba0dd
20
Vigesimal
695cb1
36
Base36
cbcnx
md5
da33713cb114cf2840dcb9a214bccda2
sha1
31c25a13817b7253ce61db5b3a194154fa6ee098
sha256
c4449db9d596a946719fcd699eea734730264626d283143880c506f693ebea3b
sha512
6a6236d349b9d5aa746779ad898d154b02fd183e329c8e7d79bff902b2f57048ac395b15a812cce1b1de5a12dd9ad172bf49467e2a8d1d7c1d73cf8f7641b832
ripemd-160
c832cb5a154eac904f37ef3fb36c8219a8bd82c8
Diameter
41370042
Circumference
129967820.0259
Area
1.34419354328E+15
Volume
3.7072895561081E+22
Surface area
5.37677417312E+15
Circumference
129967820.0259
Perimeter
82740084
Area
427870093770441
Diagonal
29253037.236172
Surface area
2567220562622646
Volume
8.8505018749135E+21
Space diagonal
35827507.327629
Perimeter
62055063
Area
1.8527318536242E+14
Altitude
17913753.663815
Surface area
1.8527318536242E+14
Volume
1.0430416487759E+21
Height
9751012.4120574