20721842257490

Names of 20721842257490

• Cardinal: 20721842257490 can be written as Twenty trillion, seven hundred twenty-one billion, eight hundred forty-two million, two hundred fifty-seven thousand, four hundred ninety.

Scientific notation

• Scientific notation: 2.072184225749 × 10¹³

Factors of 20721842257490

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 98

Divisors of 20721842257490

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 5 10 11 19 22 38 55 61 95 110 121 122 190 209 242 305 361 418 605 610 671 722 1045 1159 1210 1331 1342 1805 2090 2299 2318 2662 3355 3610 3721 3971 4598 5795 6655 6710 6859 7381 7442 7942 11495 11590 12749 13310 13718 14762 18605 19855 22021 22990 25289 25498 34295 36905 37210 39710 40931 43681 44042 50578 63745 68590 70699 73810 75449 81191 81862 87362 110105 126445 127490 140239 141398 150898 162382 204655 218405 220210 226981 242231 252890 280478 353495 377245 405955 409310 418399 436810 450241 453962 480491 484462 701195 706990 754490 777689 811910 829939 836798 900482 960982 1134905 1211155 1343281 1402390 1542629 1555378 1659878 2091995 2251205 2269810 2402455 2422310 2496791 2664541 2686562 3085258 3888445 4149695 4183990 4312639 4502410 4602389 4804910 4952651 4993582 5329082 6716405 7713145 7776890 8299390 8554579 8625278 9129329 9204778 9905302 12483955 13322705 13432810 14776091 15426290 17109158 18258658 21563195 23011945 24763255 24967910 25522339 26645410 27464701 29309951 29552182 42772895 43126390 45646645 46023890 47439029 49526510 50626279 51044678 54929402 58619902 73880455 81940141 85545790 91293290 94100369 94878058 101252558 127611695 137323505 146549755 147760910 162537001 163880282 188200738 237195145 253131395 255223390 274647010 280745729 293099510 302111711 325074002 409700705 470501845 474390290 506262790 521829319 556889069 561491458 604223422 812685005 819401410 901341551 941003690 1043658638 1113778138 1403728645 1510558555 1556862679 1625370010 1787907011 1802683102 2609146595 2784445345 2807457290 3021117110 3088203019 3113725358 3575814022 4506707755 5218293190 5568890690 5740122509 6176406038 7784313395 8939535055 9013415510 9914757061 11480245018 15441015095 15568626790 17125489469 17879070110 19829514122 28700612545 30882030190 33970233209 34250978938 49573785305 57401225090 67940466418 85627447345 99147570610 109062327671 169851166045 171254894690 188380384159 218124655342 339702332090 376760768318 545311638355 941901920795 1090623276710 1883803841590 2072184225749 4144368451498 10360921128745 20721842257490
• Sum of all divisors σ(n): 44027112798720
• Sum of proper divisors (its aliquot sum) s(n): 23305270541230
• 20721842257490 is an abundant number, because the sum of its proper divisors (23305270541230) is greater than itself. Its abundance is 2583428283740

Bases of 20721842257490

• Binary: 100101101100010101110000010111111111001010010₂
• Hexadecimal: 0x12D8AE0BFE52
• Base-36: 7CFHDUVYQ

Squares and roots of 20721842257490

• 20721842257490 squared (20721842257490²) is 429394746544298259461100100
• 20721842257490 cubed (20721842257490³) is 8897850204085847821119280247022864749000
• The square root of 20721842257490 is 4552125.0265661641
• The cube root of 20721842257490 is 27466.8878632165

Scales and comparisons

• 20,721,842,257,490 seconds is equal to 658,890 years, 25 weeks, 2 days, 5 hours, 44 minutes, 50 seconds.
• To count from 1 to 20,721,842,257,490 would take you about one million, six hundred forty-seven thousand, two hundred twenty-six 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 20721842257490 cubic inches would be around 2288.9 feet tall.

Recreational maths with 20721842257490

• 20721842257490 backwards is 09475224812702
• The number of decimal digits it has is: 14
• The sum of 20721842257490's digits is 53
• More coming soon!