20685

20,685 is an odd composite number composed of four prime numbers multiplied together.

What does the number 20685 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 16 divisors.

20685 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixteen divisors.

Prime factorization of 20685:

3 × 5 × 7 × 197

See below for interesting mathematical facts about the number 20685 from the Numbermatics database.

Names of 20685

Cardinal: 20685 can be written as Twenty thousand, six hundred eighty-five.

Scientific notation

Scientific notation: 2.0685 × 10⁴

Factors of 20685

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 4
Sum of prime factors: 212

Divisors of 20685

Number of divisors d(n): 16
Complete list of divisors:
1 3 5 7 15 21 35 105 197 591 985 1379 2955 4137 6895 20685
Sum of all divisors σ(n): 38016
Sum of proper divisors (its aliquot sum) s(n): 17331
20685 is a deficient number, because the sum of its proper divisors (17331) is less than itself. Its deficiency is 3354

Bases of 20685

Binary: 101000011001101₂
Hexadecimal: 0x50CD
Base-36: FYL

Squares and roots of 20685

20685 squared (20685²) is 427869225
20685 cubed (20685³) is 8850474919125
The square root of 20685 is 143.8228076489
The cube root of 20685 is 27.4506000181

Scales and comparisons

How big is 20685?

20,685 seconds is equal to 5 hours, 44 minutes, 45 seconds.
To count from 1 to 20,685 would take you about five hours.

This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
A cube with a volume of 20685 cubic inches would be around 2.3 feet tall.

Recreational maths with 20685

20685 backwards is 58602
20685 is a Harshad number.
The number of decimal digits it has is: 5
The sum of 20685's digits is 21
More coming soon!

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The information we have on file for 20685 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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