21217243790925

Names of 21217243790925

• Cardinal: 21217243790925 can be written as Twenty-one trillion, two hundred seventeen billion, two hundred forty-three million, seven hundred ninety thousand, nine hundred twenty-five.

Scientific notation

• Scientific notation: 2.1217243790925 × 10¹³

Factors of 21217243790925

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 51

Divisors of 21217243790925

• Number of divisors d(n): 378
• Complete list of divisors:
  1 3 5 7 9 13 15 21 23 25 35 39 45 49 63 65 69 75 91 105 115 117 147 161 175 195 207 225 245 273 299 315 325 345 441 455 483 525 529 575 585 637 735 805 819 897 975 1035 1127 1225 1365 1449 1495 1575 1587 1725 1911 2093 2205 2275 2415 2645 2691 2925 3185 3381 3675 3703 4025 4095 4485 4761 5175 5635 5733 6279 6825 6877 7245 7475 7935 9555 10143 10465 11025 11109 12075 12167 13225 13455 14651 15925 16905 18515 18837 20475 20631 22425 23805 25921 28175 28665 31395 33327 34385 36225 36501 39675 43953 47775 48139 50715 52325 55545 60835 61893 67275 73255 77763 84525 85169 92575 94185 103155 109503 119025 129605 131859 143325 144417 156975 158171 166635 171925 182505 219765 233289 240695 253575 255507 277725 279841 304175 309465 336973 366275 388815 425845 433251 470925 474513 515775 547515 596183 648025 659295 722085 766521 790855 833175 839523 912525 1010919 1098825 1107197 1166445 1203475 1277535 1399205 1423539 1547325 1684865 1788549 1944075 1958887 2129225 2166255 2372565 2518569 2737575 2980915 3032757 3296475 3321591 3610425 3637933 3832605 3954275 4197615 5054595 5365647 5535985 5832225 5876661 6387675 6436343 6996025 7117695 7750379 8424325 8942745 9794435 9964773 10831275 10913799 11862825 12592845 13712209 14904575 15163785 16607955 17629983 18189665 19163025 19309029 20988075 23251137 25272975 25465531 26828235 27679925 29383305 32181715 32741397 35588475 38751895 41136627 44713725 45054401 48972175 49823865 54568995 57927087 62964225 68561045 69753411 75818925 76396593 83039775 83672459 88149915 90948325 96545145 116255685 123409881 127327655 134141175 135163203 146916525 148035889 160908575 163706985 178258717 193759475 205683135 225272005 229189779 249119325 251017377 272844975 289635435 315380807 342805225 348767055 381982965 405489609 418362295 440749575 444107667 482725725 534776151 581278425 585707213 617049405 636638275 675816015 740179445 753052131 818534925 891293585 946142421 1028415675 1036251223 1126360025 1145948895 1255086885 1332323001 1448177175 1576904035 1604328453 1743835275 1757121639 1909914825 1924466557 2027448045 2091811475 2220538335 2673880755 2838427263 2928536065 3085247025 3108753669 3379080075 3700897225 3765260655 4099950491 4456467925 4730712105 5181256115 5271364917 5729744475 5773399671 6275434425 6661615005 7253758561 7884520175 8021642265 8785608195 9326261007 9622332785 10137240225 11102691675 12299851473 13369403775 13471265899 14192136315 14642680325 15543768345 17320199013 18826303275 20499752455 21761275683 23653560525 25906280575 26356824585 28866998355 33308075025 36268792805 36899554419 40108211325 40413797697 43928040975 46631305035 48111663925 61499257365 65283827049 67356329495 70960681575 77718841725 86600995065 94298861293 102498762275 108806378415 121241393091 131784122925 144334991775 181343964025 184497772095 202068988485 233156525175 282896583879 307496286825 326419135245 336781647475 433004975325 471494306465 544031892075 606206965455 848689751637 922488860475 1010344942425 1414482919395 1632095676225 2357471532325 3031034827275 4243448758185 7072414596975 21217243790925
• Sum of all divisors σ(n): 49771428840042
• Sum of proper divisors (its aliquot sum) s(n): 28554185049117
• 21217243790925 is an abundant number, because the sum of its proper divisors (28554185049117) is greater than itself. Its abundance is 7336941258192

Bases of 21217243790925

• Binary: 100110100110000000110010001110111111001001101₂
• Hexadecimal: 0x134C06477E4D
• Base-36: 7IR2F51L9

Squares and roots of 21217243790925

• 21217243790925 squared (21217243790925²) is 450171434083545465112355625
• 21217243790925 cubed (21217243790925³) is 9551397064660907937365068592031747703125
• The square root of 21217243790925 is 4606217.9486998875
• The cube root of 21217243790925 is 27684.0519487631
• Being both a perfect square and a perfect cube, 21217243790925 is also a perfect sixth number.

Scales and comparisons

• 21,217,243,790,925 seconds is equal to 674,642 years, 37 weeks, 4 days, 6 hours, 48 minutes, 45 seconds.
• To count from 1 to 21,217,243,790,925 would take you about one million, six hundred eighty-six thousand, six hundred 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 21217243790925 cubic inches would be around 2307 feet tall.

Recreational maths with 21217243790925

• 21217243790925 backwards is 52909734271212
• The number of decimal digits it has is: 14
• The sum of 21217243790925's digits is 54
• More coming soon!