20505990890

Names of 20505990890

• Cardinal: 20505990890 can be written as Twenty billion, five hundred five million, nine hundred ninety thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 2.050599089 × 10¹⁰

Factors of 20505990890

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 459

Divisors of 20505990890

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 5 7 10 11 14 22 35 37 49 55 70 74 77 98 110 154 185 245 259 343 370 385 397 407 490 518 539 686 770 794 814 1078 1295 1369 1715 1813 1985 2035 2590 2695 2738 2779 2849 3430 3626 3773 3970 4070 4367 5390 5558 5698 6845 7546 8734 9065 9583 12691 13690 13895 14245 14689 15059 18130 18865 19166 19453 19943 21835 25382 27790 28490 29378 30118 30569 37730 38906 39886 43670 47915 61138 63455 67081 73445 75295 95830 97265 99715 102823 105413 126910 134162 136171 139601 146890 150590 152845 161579 194530 199430 205646 210826 213983 272342 279202 305690 323158 335405 427966 469567 514115 527065 543493 670810 680855 698005 719761 737891 807895 939134 1028230 1054130 1069915 1086986 1131053 1361710 1396010 1439522 1475782 1497881 1615790 2139830 2262106 2347835 2717465 2995762 3598805 3689455 3804451 4695670 5038327 5165237 5434930 5655265 5978423 7197610 7378910 7489405 7608902 7917371 10076654 10330474 11310530 11956846 14978810 15834742 19022255 25191635 25826185 26631157 29892115 38044510 39586855 41848961 50383270 51652370 53262314 55421597 59784230 79173710 83697922 110843194 133155785 186418099 209244805 266311570 277107985 292942727 372836198 418489610 554215970 585885454 932090495 1464713635 1864180990 2050599089 2929427270 4101198178 10252995445 20505990890
• Sum of all divisors σ(n): 48382790400
• Sum of proper divisors (its aliquot sum) s(n): 27876799510
• 20505990890 is an abundant number, because the sum of its proper divisors (27876799510) is greater than itself. Its abundance is 7370808620

Bases of 20505990890

• Binary: 10011000110010000001001011011101010₂
• Hexadecimal: 0x4C64096EA
• Base-36: 9F4QJU2

Squares and roots of 20505990890

• 20505990890 squared (20505990890²) is 420495662380762992100
• 20505990890 cubed (20505990890³) is 8622680222064441627251741969000
• The square root of 20505990890 is 143199.1301998723
• The cube root of 20505990890 is 2737.1184159579

Scales and comparisons

• 20,505,990,890 seconds is equal to 652 years, 1 week, 2 days, 20 hours, 34 minutes, 50 seconds.
• To count from 1 to 20,505,990,890 would take you about one thousand, three hundred four 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 20505990890 cubic inches would be around 228.1 feet tall.

Recreational maths with 20505990890

• 20505990890 backwards is 09809950502
• The number of decimal digits it has is: 11
• The sum of 20505990890's digits is 47
• More coming soon!