21513422784

Names of 21513422784

• Cardinal: 21513422784 can be written as Twenty-one billion, five hundred thirteen million, four hundred twenty-two thousand, seven hundred eighty-four.

Scientific notation

• Scientific notation: 2.1513422784 × 10¹⁰

Factors of 21513422784

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 30294

Divisors of 21513422784

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 23 24 28 32 42 46 48 56 64 69 84 92 96 112 138 161 168 184 192 224 276 322 336 368 448 483 529 552 644 672 736 966 1058 1104 1288 1344 1472 1587 1932 2116 2208 2576 3174 3703 3864 4232 4416 5152 6348 7406 7728 8464 10304 11109 12696 14812 15456 16928 22218 25392 29624 30259 30912 33856 44436 50784 59248 60518 88872 90777 101568 118496 121036 177744 181554 211813 236992 242072 355488 363108 423626 484144 635439 695957 710976 726216 847252 968288 1270878 1391914 1452432 1694504 1936576 2087871 2541756 2783828 2904864 3389008 4175742 4871699 5083512 5567656 5809728 6778016 8351484 9743398 10167024 11135312 13556032 14615097 16007011 16702968 19486796 20334048 22270624 29230194 32014022 33405936 38973592 40668096 44541248 48021033 58460388 64028044 66811872 77947184 96042066 112049077 116920776 128056088 133623744 155894368 192084132 224098154 233841552 256112176 311788736 336147231 384168264 448196308 467683104 512224352 672294462 768336528 896392616 935366208 1024448704 1344588924 1536673056 1792785232 2689177848 3073346112 3585570464 5378355696 7171140928 10756711392 21513422784
• Sum of all divisors σ(n): 68006081920
• Sum of proper divisors (its aliquot sum) s(n): 46492659136
• 21513422784 is an abundant number, because the sum of its proper divisors (46492659136) is greater than itself. Its abundance is 24979236352

Bases of 21513422784

• Binary: 10100000010010011001100011111000000₂
• Hexadecimal: 0x5024CC7C0
• Base-36: 9VSJB9C

Squares and roots of 21513422784

• 21513422784 squared (21513422784²) is 462827359883130310656
• 21513422784 cubed (21513422784³) is 9957000669168303202507788386304
• The square root of 21513422784 is 146674.5471579851
• The cube root of 21513422784 is 2781.2274303103

Scales and comparisons

• 21,513,422,784 seconds is equal to 684 years, 3 weeks, 22 hours, 46 minutes, 24 seconds.
• To count from 1 to 21,513,422,784 would take you about one thousand, three hundred sixty-eight 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 21513422784 cubic inches would be around 231.8 feet tall.

Recreational maths with 21513422784

• 21513422784 backwards is 48722431512
• The number of decimal digits it has is: 11
• The sum of 21513422784's digits is 39
• More coming soon!