21272388840

Names of 21272388840

• Cardinal: 21272388840 can be written as Twenty-one billion, two hundred seventy-two million, three hundred eighty-eight thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.127238884 × 10¹⁰

Factors of 21272388840

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 7697

Divisors of 21272388840

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 90 120 180 360 7687 15374 23061 30748 38435 46122 61496 69183 76870 92244 115305 138366 153740 184488 230610 276732 307480 345915 461220 553464 691830 922440 1383660 2767320 59089969 118179938 177269907 236359876 295449845 354539814 472719752 531809721 590899690 709079628 886349535 1063619442 1181799380 1418159256 1772699070 2127238884 2363598760 2659048605 3545398140 4254477768 5318097210 7090796280 10636194420 21272388840
• Sum of all divisors σ(n): 69144258690
• Sum of proper divisors (its aliquot sum) s(n): 47871869850
• 21272388840 is an abundant number, because the sum of its proper divisors (47871869850) is greater than itself. Its abundance is 26599481010

Bases of 21272388840

• Binary: 10011110011111011101110010011101000₂
• Hexadecimal: 0x4F3EEE4E8
• Base-36: 9RT14A0

Squares and roots of 21272388840

• 21272388840 squared (21272388840²) is 452514526960156545600
• 21272388840 cubed (21272388840³) is 9626064973245113225274391104000
• The square root of 21272388840 is 145850.5702422859
• The cube root of 21272388840 is 2770.8015439853

Scales and comparisons

• 21,272,388,840 seconds is equal to 676 years, 20 weeks, 4 days, 4 hours, 54 minutes.
• To count from 1 to 21,272,388,840 would take you about one thousand, three hundred fifty-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 21272388840 cubic inches would be around 230.9 feet tall.

Recreational maths with 21272388840

• 21272388840 backwards is 04888327212
• 21272388840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21272388840's digits is 45
• More coming soon!