21539388024

Names of 21539388024

• Cardinal: 21539388024 can be written as Twenty-one billion, five hundred thirty-nine million, three hundred eighty-eight thousand and twenty-four.

Scientific notation

• Scientific notation: 2.1539388024 × 10¹⁰

Factors of 21539388024

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1295080

Divisors of 21539388024

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 6 7 8 9 11 12 14 18 21 22 24 27 28 33 36 42 44 54 56 63 66 72 77 84 88 99 108 126 132 154 168 189 198 216 231 252 264 297 308 378 396 462 504 594 616 693 756 792 924 1188 1386 1512 1848 2079 2376 2772 4158 5544 8316 16632 1295057 2590114 3885171 5180228 7770342 9065399 10360456 11655513 14245627 15540684 18130798 23311026 27196197 28491254 31081368 34966539 36261596 42736881 46622052 54392394 56982508 69933078 72523192 81588591 85473762 93244104 99719389 108784788 113965016 128210643 139866156 163177182 170947524 199438778 217569576 244765773 256421286 279732312 299158167 326354364 341895048 384631929 398877556 489531546 512842572 598316334 652708728 769263858 797755112 897474501 979063092 1025685144 1196632668 1538527716 1794949002 1958126184 2393265336 2692423503 3077055432 3589898004 5384847006 7179796008 10769694012 21539388024
• Sum of all divisors σ(n): 74595340800
• Sum of proper divisors (its aliquot sum) s(n): 53055952776
• 21539388024 is an abundant number, because the sum of its proper divisors (53055952776) is greater than itself. Its abundance is 31516564752

Bases of 21539388024

• Binary: 10100000011110110001111101001111000₂
• Hexadecimal: 0x503D8FA78
• Base-36: 9W7ZU60

Squares and roots of 21539388024

• 21539388024 squared (21539388024²) is 463945236448434624576
• 21539388024 cubed (21539388024³) is 9993096469749261046139230477824
• The square root of 21539388024 is 146763.0335745347
• The cube root of 21539388024 is 2782.3458979905

Scales and comparisons

• 21,539,388,024 seconds is equal to 684 years, 46 weeks, 11 hours, 20 minutes, 24 seconds.
• To count from 1 to 21,539,388,024 would take you about one thousand, three hundred sixty-nine 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 21539388024 cubic inches would be around 231.9 feet tall.

Recreational maths with 21539388024

• 21539388024 backwards is 42088393512
• The number of decimal digits it has is: 11
• The sum of 21539388024's digits is 45
• More coming soon!