21243377280

Names of 21243377280

• Cardinal: 21243377280 can be written as Twenty-one billion, two hundred forty-three million, three hundred seventy-seven thousand, two hundred eighty.

Scientific notation

• Scientific notation: 2.124337728 × 10¹⁰

Factors of 21243377280

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 11064269

Divisors of 21243377280

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 128 160 192 240 320 384 480 640 960 1920 11064259 22128518 33192777 44257036 55321295 66385554 88514072 110642590 132771108 165963885 177028144 221285180 265542216 331927770 354056288 442570360 531084432 663855540 708112576 885140720 1062168864 1327711080 1416225152 1770281440 2124337728 2655422160 3540562880 4248675456 5310844320 7081125760 10621688640 21243377280
• Sum of all divisors σ(n): 67713271200
• Sum of proper divisors (its aliquot sum) s(n): 46469893920
• 21243377280 is an abundant number, because the sum of its proper divisors (46469893920) is greater than itself. Its abundance is 25226516640

Bases of 21243377280

• Binary: 10011110010001101000011011010000000₂
• Hexadecimal: 0x4F2343680
• Base-36: 9RBRATC

Squares and roots of 21243377280

• 21243377280 squared (21243377280²) is 451281078260420198400
• 21243377280 cubed (21243377280³) is 9586734204811312365943652352000
• The square root of 21243377280 is 145751.0798587785
• The cube root of 21243377280 is 2769.5413525537

Scales and comparisons

• 21,243,377,280 seconds is equal to 675 years, 24 weeks, 4 days, 10 hours, 8 minutes.
• To count from 1 to 21,243,377,280 would take you about one thousand, three hundred fifty 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 21243377280 cubic inches would be around 230.8 feet tall.

Recreational maths with 21243377280

• 21243377280 backwards is 08277334212
• The number of decimal digits it has is: 11
• The sum of 21243377280's digits is 39
• More coming soon!