21712181220

Names of 21712181220

• Cardinal: 21712181220 can be written as Twenty-one billion, seven hundred twelve million, one hundred eighty-one thousand, two hundred twenty.

Scientific notation

• Scientific notation: 2.171218122 × 10¹⁰

Factors of 21712181220

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 3323

Divisors of 21712181220

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 19 20 27 30 36 38 45 54 57 60 73 76 81 90 95 108 114 135 146 162 171 180 190 219 228 243 270 285 292 324 342 365 380 405 438 486 513 540 570 657 684 730 810 855 876 972 1026 1095 1140 1215 1314 1387 1460 1539 1620 1710 1971 2052 2190 2430 2565 2628 2774 3078 3221 3285 3420 3942 4161 4380 4617 4860 5130 5548 5913 6156 6442 6570 6935 7695 7884 8322 9234 9663 9855 10260 11826 12483 12884 13140 13870 15390 16105 16644 17739 18468 19326 19710 20805 23085 23652 24966 27740 28989 29565 30780 32210 35478 37449 38652 39420 41610 46170 48315 49932 57978 59130 61199 62415 64420 70956 74898 83220 86967 88695 92340 96630 112347 115956 118260 122398 124830 144945 149796 173934 177390 183597 187245 193260 224694 235133 244796 249660 260901 289890 305995 337041 347868 354780 367194 374490 434835 449388 470266 521802 550791 561735 579780 611990 674082 705399 734388 748980 782703 869670 917985 940532 1043604 1101582 1123470 1175665 1223980 1304505 1348164 1410798 1565406 1652373 1685205 1739340 1835970 2116197 2203164 2246940 2351330 2609010 2753955 2821596 3130812 3304746 3370410 3526995 3671940 3913515 4232394 4467527 4702660 4957119 5218020 5507910 6348591 6609492 6740820 7053990 7827030 8261865 8464788 8935054 9914238 10580985 11015820 12697182 13402581 14107980 14871357 15654060 16523730 17870108 19045773 19828476 21161970 22337635 24785595 25394364 26805162 29742714 31742955 33047460 38091546 40207743 42323940 44675270 49571190 53610324 57137319 59485428 63485910 67012905 74356785 76183092 80415486 89350540 95228865 99142380 114274638 120623229 126971820 134025810 148713570 160830972 190457730 201038715 228549276 241246458 268051620 285686595 297427140 361869687 380915460 402077430 482492916 571373190 603116145 723739374 804154860 1085609061 1142746380 1206232290 1447478748 1809348435 2171218122 2412464580 3618696870 4342436244 5428045305 7237393740 10856090610 21712181220
• Sum of all divisors σ(n): 72901745280
• Sum of proper divisors (its aliquot sum) s(n): 51189564060
• 21712181220 is an abundant number, because the sum of its proper divisors (51189564060) is greater than itself. Its abundance is 29477382840

Bases of 21712181220

• Binary: 10100001110001001011001011111100100₂
• Hexadecimal: 0x50E2597E4
• Base-36: 9Z2VE90

Squares and roots of 21712181220

• 21712181220 squared (21712181220²) is 471418813330120688400
• 21712181220 cubed (21712181220³) is 10235530705540932071011951848000
• The square root of 21712181220 is 147350.5385806241
• The cube root of 21712181220 is 2789.7662655389

Scales and comparisons

• 21,712,181,220 seconds is equal to 690 years, 19 weeks, 5 days, 9 hours, 27 minutes.
• To count from 1 to 21,712,181,220 would take you about one thousand, three hundred eighty 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 21712181220 cubic inches would be around 232.5 feet tall.

Recreational maths with 21712181220

• 21712181220 backwards is 02218121712
• 21712181220 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21712181220's digits is 27
• More coming soon!