21821533812

Names of 21821533812

• Cardinal: 21821533812 can be written as Twenty-one billion, eight hundred twenty-one million, five hundred thirty-three thousand, eight hundred twelve.

Scientific notation

• Scientific notation: 2.1821533812 × 10¹⁰

Factors of 21821533812

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 7509

Divisors of 21821533812

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 4 6 9 12 13 17 18 26 27 34 36 39 41 51 52 54 68 78 81 82 102 108 117 123 153 156 162 164 204 221 234 246 306 324 351 369 442 459 468 492 533 612 663 697 702 738 884 918 1053 1066 1107 1326 1377 1394 1404 1476 1599 1836 1989 2091 2106 2132 2214 2652 2754 2788 3198 3321 3978 4182 4212 4428 4797 5508 5967 6273 6396 6642 7433 7956 8364 9061 9594 11934 12546 13284 14391 14866 17901 18122 18819 19188 22299 23868 25092 27183 28782 29732 35802 36244 37638 43173 44598 54366 56457 57564 66897 71604 75276 81549 86346 89196 96629 108732 112914 126361 133794 163098 172692 193258 200691 225828 244647 252722 267588 289887 304753 326196 379083 386516 401382 489294 505444 579774 602073 609506 733941 758166 802764 869661 914259 978588 1137249 1159548 1204146 1219012 1467882 1516332 1642693 1739322 1828518 2274498 2408292 2608983 2742777 2935764 3285386 3411747 3478644 3657036 3961789 4548996 4928079 5180801 5217966 5485554 6570772 6823494 7826949 7923578 8228331 9856158 10235241 10361602 10435932 10971108 11885367 13646988 14784237 15542403 15653898 15847156 16456662 19712316 20470482 20723204 23770734 24684993 29568474 31084806 31307796 32913324 35656101 40940964 44352711 46627209 47541468 49369986 59136948 62169612 67350413 71312202 88705422 93254418 98739972 106968303 133058133 134700826 139881627 142624404 177410844 186508836 202051239 213936606 266116266 269401652 279763254 320904909 404102478 419644881 427873212 532232532 559526508 606153717 641809818 808204956 839289762 1212307434 1283619636 1678579524 1818461151 2424614868 3636922302 5455383453 7273844604 10910766906 21821533812
• Sum of all divisors σ(n): 66643193232
• Sum of proper divisors (its aliquot sum) s(n): 44821659420
• 21821533812 is an abundant number, because the sum of its proper divisors (44821659420) is greater than itself. Its abundance is 23000125608

Bases of 21821533812

• Binary: 10100010100101010100010111001110100₂
• Hexadecimal: 0x514AA2E74
• Base-36: A0VZ790

Squares and roots of 21821533812

• 21821533812 squared (21821533812²) is 476179337908259251344
• 21821533812 cubed (21821533812³) is 10390963522740852607264902443328
• The square root of 21821533812 is 147721.1352921443
• The cube root of 21821533812 is 2794.4419426395

Scales and comparisons

• 21,821,533,812 seconds is equal to 693 years, 44 weeks, 4 days, 1 hour, 10 minutes, 12 seconds.
• To count from 1 to 21,821,533,812 would take you about one thousand, three hundred eighty-seven 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 21821533812 cubic inches would be around 232.9 feet tall.

Recreational maths with 21821533812

• 21821533812 backwards is 21833512812
• 21821533812 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21821533812's digits is 36
• More coming soon!