20742

Names of 20742

• Cardinal: 20742 can be written as Twenty thousand, seven hundred forty-two.

Scientific notation

• Scientific notation: 2.0742 × 10⁴

Factors of 20742

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 3462

Divisors of 20742

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 3 6 3457 6914 10371 20742
• Sum of all divisors σ(n): 41496
• Sum of proper divisors (its aliquot sum) s(n): 20754
• 20742 is an abundant number, because the sum of its proper divisors (20754) is greater than itself. Its abundance is 12

Bases of 20742

• Binary: 101000100000110₂
• Hexadecimal: 0x5106
• Base-36: G06

Squares and roots of 20742

• 20742 squared (20742²) is 430230564
• 20742 cubed (20742³) is 8923842358488
• The square root of 20742 is 144.0208318265
• The cube root of 20742 is 27.4757913673

Scales and comparisons

• 20,742 seconds is equal to 5 hours, 45 minutes, 42 seconds.
• To count from 1 to 20,742 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 20742 cubic inches would be around 2.3 feet tall.

Recreational maths with 20742

• 20742 backwards is 24702
• The number of decimal digits it has is: 5
• The sum of 20742's digits is 15
• More coming soon!