21731236065

Names of 21731236065

• Cardinal: 21731236065 can be written as Twenty-one billion, seven hundred thirty-one million, two hundred thirty-six thousand and sixty-five.

Scientific notation

• Scientific notation: 2.1731236065 × 10¹⁰

Factors of 21731236065

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 243

Divisors of 21731236065

• Number of divisors d(n): 384
• Complete list of divisors:
  1 3 5 7 9 11 15 21 27 31 33 35 45 55 59 63 77 81 93 99 105 127 135 155 165 177 189 217 231 243 279 295 297 315 341 381 385 405 413 465 495 531 567 635 649 651 693 837 885 889 891 945 1023 1085 1143 1155 1215 1239 1395 1397 1485 1593 1701 1705 1829 1905 1947 1953 2065 2079 2387 2511 2655 2667 2673 2835 3069 3245 3255 3429 3465 3717 3937 4185 4191 4445 4455 4543 4779 5115 5487 5715 5841 5859 6195 6237 6985 7161 7493 7533 7965 8001 8505 9145 9207 9735 9765 9779 10287 10395 11151 11811 11935 12555 12573 12803 13335 13365 13629 14337 15345 16461 17145 17523 17577 18585 18711 19685 20119 20955 21483 22479 22715 23895 24003 27435 27559 27621 29205 29295 29337 30861 31185 33453 35433 35805 37465 37665 37719 38409 40005 40887 43307 46035 48895 49383 51435 52451 52569 52731 55755 59055 60357 62865 64015 64449 67437 68145 71685 72009 82305 82423 82677 82863 87615 87885 88011 93555 100359 100595 106299 107415 112395 113157 115227 120015 122661 129921 137795 138105 140833 146685 148149 154305 157353 157707 167265 177165 181071 188595 192045 193347 202311 204435 216027 216535 232283 246915 247269 248031 262255 262845 263655 264033 301785 303149 318897 322245 337185 339471 345681 360045 367983 389763 412115 413385 414315 422499 440055 444447 472059 501795 531495 543213 565785 576135 576961 580041 606933 613305 649605 696849 704165 740745 741807 744093 786765 788535 792099 905355 909447 956691 966735 1011555 1037043 1080135 1103949 1161415 1169289 1236345 1240155 1267497 1320165 1416177 1515745 1594485 1625981 1629639 1697355 1728405 1730883 1820799 1839915 1948815 2090547 2112495 2222235 2225421 2232279 2360295 2376297 2555113 2716065 2728341 2884805 2900205 3034665 3111129 3484245 3507867 3709035 3720465 3802491 3960495 4248531 4547235 4783455 4877943 4888917 5185215 5192649 5519745 5846445 6271641 6337485 6676263 6696837 7080885 7665339 8129905 8148195 8185023 8654415 9103995 10452735 10523601 11127105 11161395 11407473 11881485 12745593 12775565 13641705 14633829 15555645 15577947 17539335 17885791 18814923 19012455 20028789 21242655 22996017 24389715 24444585 24555069 25963245 31358205 33381315 33484185 34222419 38326695 40925115 43901487 46733841 52618005 53657373 56444769 57037365 63727965 68988051 73169145 73665207 77889735 89428955 94074615 100143945 114980085 122775345 131704461 140201523 160972119 171112095 206964153 219507435 233669205 268286865 282223845 344940255 368326035 395113383 482916357 620892459 658522305 701007615 804860595 1034820765 1448749071 1975566915 2414581785 3104462295 4346247213 7243745355 21731236065
• Sum of all divisors σ(n): 51527024640
• Sum of proper divisors (its aliquot sum) s(n): 29795788575
• 21731236065 is an abundant number, because the sum of its proper divisors (29795788575) is greater than itself. Its abundance is 8064552510

Bases of 21731236065

• Binary: 10100001111010010000101100011100001₂
• Hexadecimal: 0x50F4858E1
• Base-36: 9ZE7T29

Squares and roots of 21731236065

• 21731236065 squared (21731236065²) is 472246620912756684225
• 21731236065 cubed (21731236065³) is 10262502799953681274800136574625
• The square root of 21731236065 is 147415.1826135965
• The cube root of 21731236065 is 2790.5821365927

Scales and comparisons

• 21,731,236,065 seconds is equal to 690 years, 51 weeks, 1 day, 22 hours, 27 minutes, 45 seconds.
• To count from 1 to 21,731,236,065 would take you about one thousand, three hundred eighty-one 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 21731236065 cubic inches would be around 232.5 feet tall.

Recreational maths with 21731236065

• 21731236065 backwards is 56063213712
• The number of decimal digits it has is: 11
• The sum of 21731236065's digits is 36
• More coming soon!