21105972320

Names of 21105972320

• Cardinal: 21105972320 can be written as Twenty-one billion, one hundred five million, nine hundred seventy-two thousand, three hundred twenty.

Scientific notation

• Scientific notation: 2.110597232 × 10¹⁰

Factors of 21105972320

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 762679

Divisors of 21105972320

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 40 80 160 173 346 692 865 1384 1730 2768 3460 5536 6920 13840 27680 762499 1524998 3049996 3812495 6099992 7624990 12199984 15249980 24399968 30499960 60999920 121999840 131912327 263824654 527649308 659561635 1055298616 1319123270 2110597232 2638246540 4221194464 5276493080 10552986160 21105972320
• Sum of all divisors σ(n): 50151150000
• Sum of proper divisors (its aliquot sum) s(n): 29045177680
• 21105972320 is an abundant number, because the sum of its proper divisors (29045177680) is greater than itself. Its abundance is 7939205360

Bases of 21105972320

• Binary: 10011101010000000111001010001100000₂
• Hexadecimal: 0x4EA039460
• Base-36: 9P1Y8GW

Squares and roots of 21105972320

• 21105972320 squared (21105972320²) is 445462067572606182400
• 21105972320 cubed (21105972320³) is 9401910067797395675995271168000
• The square root of 21105972320 is 145278.9465820839
• The cube root of 21105972320 is 2763.5571791559

Scales and comparisons

• 21,105,972,320 seconds is equal to 671 years, 5 weeks, 3 days, 2 hours, 5 minutes, 20 seconds.
• To count from 1 to 21,105,972,320 would take you about one thousand, three hundred forty-two 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 21105972320 cubic inches would be around 230.3 feet tall.

Recreational maths with 21105972320

• 21105972320 backwards is 02327950112
• 21105972320 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21105972320's digits is 32
• More coming soon!