21686505843420

Names of 21686505843420

• Cardinal: 21686505843420 can be written as Twenty-one trillion, six hundred eighty-six billion, five hundred five million, eight hundred forty-three thousand, four hundred twenty.

Scientific notation

• Scientific notation: 2.168650584342 × 10¹³

Factors of 21686505843420

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 470

Divisors of 21686505843420

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 9 10 11 12 15 18 20 22 30 33 36 44 45 55 60 66 90 99 110 121 132 165 180 198 220 242 330 363 396 449 484 495 605 660 726 898 990 1089 1210 1331 1347 1452 1796 1815 1980 2178 2245 2420 2662 2694 3630 3993 4041 4356 4490 4939 5324 5388 5445 6655 6735 7260 7986 8082 8980 9878 10890 11979 13310 13470 14817 15972 16164 19756 19965 20205 21780 23958 24695 26620 26940 29634 39930 40410 44451 47916 49390 54329 59268 59895 74085 79860 80820 88902 98780 108658 119790 148170 162987 177804 201601 217316 222255 239580 271645 296340 325974 403202 444510 488961 543290 597619 604803 651948 806404 814935 889020 977922 1008005 1086580 1195238 1209606 1629870 1792857 1814409 1955844 2016010 2217611 2390476 2419212 2444805 2988095 3024015 3259740 3585714 3628818 4032020 4435222 4889610 5378571 5976190 6048030 6652833 7171428 7257636 8870444 8964285 9072045 9779220 10757142 11088055 11952380 12096060 13305666 17928570 18144090 19958499 21514284 22176110 24393721 26611332 26892855 33264165 35857140 36288180 39916998 44352220 48787442 53785710 66528330 73181163 79833996 90518849 97574884 99792495 107571420 121968605 133056660 146362326 181037698 199584990 219543489 243937210 268330931 271556547 292724652 362075396 365905815 399169980 439086978 452594245 487874420 536661862 543113094 731811630 804992793 814669641 878173956 905188490 995707339 1073323724 1086226188 1097717445 1341654655 1357782735 1463623260 1609985586 1629339282 1810376980 1991414678 2195434890 2414978379 2683309310 2715565470 2987122017 3219971172 3258678564 3982829356 4024963965 4073348205 4390869780 4829956758 4978536695 5366618620 5431130940 5974244034 8049927930 8146696410 8961366051 9659913516 9957073390 10952780729 11948488068 12074891895 14935610085 16099855860 16293392820 17922732102 19914146780 21905561458 24149783790 29871220170 32858342187 35845464204 43811122916 44806830255 48299567580 54763903645 59742440340 65716684374 89613660510 98575026561 109527807290 120480588019 131433368748 164291710935 179227321020 197150053122 219055614580 240961176038 328583421870 361441764057 394300106244 481922352076 492875132805 602402940095 657166843740 722883528114 985750265610 1084325292171 1204805880190 1445767056228 1807208820285 1971500531220 2168650584342 2409611760380 3614417640570 4337301168684 5421626460855 7228835281140 10843252921710 21686505843420
• Sum of all divisors σ(n): 72517207089600
• Sum of proper divisors (its aliquot sum) s(n): 50830701246180
• 21686505843420 is an abundant number, because the sum of its proper divisors (50830701246180) is greater than itself. Its abundance is 29144195402760

Bases of 21686505843420

• Binary: 100111011100101001000011110100010101011011100₂
• Hexadecimal: 0x13B9487A2ADC
• Base-36: 7OQN5NEN0

Squares and roots of 21686505843420

• 21686505843420 squared (21686505843420²) is 470304535696689805557296400
• 21686505843420 cubed (21686505843420³) is 10199262061573193448969451968216929688000
• The square root of 21686505843420 is 4656877.2630830633
• The cube root of 21686505843420 is 27886.6616798603

Scales and comparisons

• 21,686,505,843,420 seconds is equal to 689,563 years, 41 weeks, 6 days, 57 minutes.
• To count from 1 to 21,686,505,843,420 would take you about one million, seven hundred twenty-three thousand, nine hundred nine 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 21686505843420 cubic inches would be around 2323.9 feet tall.

Recreational maths with 21686505843420

• 21686505843420 backwards is 02434850568612
• The number of decimal digits it has is: 14
• The sum of 21686505843420's digits is 54
• More coming soon!