20864

Names of 20864

• Cardinal: 20864 can be written as Twenty thousand, eight hundred sixty-four.

Scientific notation

• Scientific notation: 2.0864 × 10⁴

Factors of 20864

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 165

Divisors of 20864

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 4 8 16 32 64 128 163 326 652 1304 2608 5216 10432 20864
• Sum of all divisors σ(n): 41820
• Sum of proper divisors (its aliquot sum) s(n): 20956
• 20864 is an abundant number, because the sum of its proper divisors (20956) is greater than itself. Its abundance is 92

Bases of 20864

• Binary: 101000110000000₂
• Hexadecimal: 0x5180
• Base-36: G3K

Squares and roots of 20864

• 20864 squared (20864²) is 435306496
• 20864 cubed (20864³) is 9082234732544
• The square root of 20864 is 144.4437606823
• The cube root of 20864 is 27.5295550019

Scales and comparisons

• 20,864 seconds is equal to 5 hours, 47 minutes, 44 seconds.
• To count from 1 to 20,864 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 20864 cubic inches would be around 2.3 feet tall.

Recreational maths with 20864

• 20864 backwards is 46802
• The number of decimal digits it has is: 5
• The sum of 20864's digits is 20
• More coming soon!