20721997745960

Names of 20721997745960

• Cardinal: 20721997745960 can be written as Twenty trillion, seven hundred twenty-one billion, nine hundred ninety-seven million, seven hundred forty-five thousand, nine hundred sixty.

Scientific notation

• Scientific notation: 2.072199774596 × 10¹³

Factors of 20721997745960

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 539703

Divisors of 20721997745960

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 5 7 8 10 14 17 20 28 34 35 40 56 68 70 85 119 136 140 170 238 280 340 476 595 680 952 1190 2380 4760 8191 16382 32764 40955 57337 65528 81910 114674 139247 163820 229348 278494 286685 327640 458696 531481 556988 573370 696235 974729 1062962 1113976 1146740 1392470 1949458 2125924 2293480 2657405 2784940 3720367 3898916 4251848 4873645 5314810 5569880 7440734 7797832 9035177 9747290 10629620 14881468 18070354 18601835 19494580 21259240 29762936 36140708 37203670 38989160 45175885 63246239 72281416 74407340 90351770 126492478 148814680 180703540 252984956 316231195 361407080 505969912 632462390 1264924780 2529849560 4353360871 8706721742 17413443484 21766804355 30473526097 34826886968 43533608710 60947052194 74007134807 87067217420 121894104388 148014269614 152367630485 174134434840 243788208776 296028539228 304735260970 370035674035 518049943649 592057078456 609470521940 740071348070 1036099887298 1218941043880 1480142696140 2072199774596 2590249718245 2960285392280 4144399549192 5180499436490 10360998872980 20721997745960
• Sum of all divisors σ(n): 56426551050240
• Sum of proper divisors (its aliquot sum) s(n): 35704553304280
• 20721997745960 is an abundant number, because the sum of its proper divisors (35704553304280) is greater than itself. Its abundance is 14982555558320

Bases of 20721997745960

• Binary: 100101101100010110111010100001000111100101000₂
• Hexadecimal: 0x12D8B7508F28
• Base-36: 7CFJYFJMW

Squares and roots of 20721997745960

• 20721997745960 squared (20721997745960²) is 429401190583571320696321600
• 20721997745960 cubed (20721997745960³) is 8898050503385305284476076492863260736000
• The square root of 20721997745960 is 4552142.1052027803
• The cube root of 20721997745960 is 27466.9565632487

Scales and comparisons

• 20,721,997,745,960 seconds is equal to 658,895 years, 22 weeks, 2 days, 20 hours, 59 minutes, 20 seconds.
• To count from 1 to 20,721,997,745,960 would take you about one million, six hundred forty-seven thousand, two hundred thirty-eight 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 20721997745960 cubic inches would be around 2288.9 feet tall.

Recreational maths with 20721997745960

• 20721997745960 backwards is 06954779912702
• 20721997745960 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 20721997745960's digits is 68
• More coming soon!