20918320320

Names of 20918320320

• Cardinal: 20918320320 can be written as Twenty billion, nine hundred eighteen million, three hundred twenty thousand, three hundred twenty.

Scientific notation

• Scientific notation: 2.091832032 × 10¹⁰

Factors of 20918320320

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 21789927

Divisors of 20918320320

• Number of divisors d(n): 56
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 160 192 240 320 480 960 21789917 43579834 65369751 87159668 108949585 130739502 174319336 217899170 261479004 326848755 348638672 435798340 522958008 653697510 697277344 871596680 1045916016 1307395020 1394554688 1743193360 2091832032 2614790040 3486386720 4183664064 5229580080 6972773440 10459160160 20918320320
• Sum of all divisors σ(n): 66415670064
• Sum of proper divisors (its aliquot sum) s(n): 45497349744
• 20918320320 is an abundant number, because the sum of its proper divisors (45497349744) is greater than itself. Its abundance is 24579029424

Bases of 20918320320

• Binary: 10011011110110101000011110011000000₂
• Hexadecimal: 0x4DED43CC0
• Base-36: 9LY879C

Squares and roots of 20918320320

• 20918320320 squared (20918320320²) is 437576125010124902400
• 20918320320 cubed (20918320320³) is 9153357547346155951611936768000
• The square root of 20918320320 is 144631.6712203797
• The cube root of 20918320320 is 2755.3425757269

Scales and comparisons

• 20,918,320,320 seconds is equal to 665 years, 7 weeks, 1 day, 4 hours, 32 minutes.
• To count from 1 to 20,918,320,320 would take you about one thousand, three hundred thirty years!

  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 20918320320 cubic inches would be around 229.6 feet tall.

Recreational maths with 20918320320

• 20918320320 backwards is 02302381902
• 20918320320 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 20918320320's digits is 30
• More coming soon!