21686899843920

Names of 21686899843920

• Cardinal: 21686899843920 can be written as Twenty-one trillion, six hundred eighty-six billion, eight hundred ninety-nine million, eight hundred forty-three thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.168689984392 × 10¹³

Factors of 21686899843920

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 5136

Divisors of 21686899843920

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 31 40 48 60 62 80 93 120 124 155 186 240 248 310 372 465 496 601 620 744 930 1202 1240 1488 1801 1803 1860 2404 2480 2693 3005 3602 3606 3720 4808 5386 5403 6010 7204 7212 7440 8079 9005 9015 9616 10772 10806 12020 13465 14408 14424 16158 18010 18030 18631 21544 21612 24040 26930 27015 28816 28848 32316 36020 36060 37262 40395 43088 43224 48080 53860 54030 55831 55893 64632 72040 72120 74524 80790 83483 86448 93155 107720 108060 111662 111786 129264 144080 144240 149048 161580 166966 167493 186310 215440 216120 223324 223572 250449 279155 279465 298096 323160 333932 334986 372620 417415 432240 446648 447144 500898 558310 558930 646320 667864 669972 745240 834830 837465 893296 894288 1001796 1082401 1116620 1117860 1252245 1335728 1339944 1490480 1618493 1669660 1674930 2003592 2164802 2233240 2235720 2504490 2679888 3236986 3247203 3339320 3349860 4007184 4329604 4466480 4471440 4850093 4855479 5008980 5412005 6473972 6494406 6678640 6699720 8092465 8659208 9700186 9710958 10017960 10824010 12947944 12988812 13399440 14550279 16184930 16236015 17318416 19400372 19421916 20035920 21648020 24250465 24277395 25895888 25977624 29100558 32369860 32472030 33554431 38800744 38843832 43296040 48500930 48554790 50173283 51955248 58201116 64739720 64944060 67108862 72751395 77601488 77687664 86592080 97001860 97109580 100346566 100663293 116402232 129479440 129888120 134217724 145502790 150352883 150519849 167772155 194003720 194219160 200693132 201326586 232804464 250866415 259776240 268435448 291005580 300705766 301039698 335544310 388007440 388438320 401386264 402653172 451058649 501732830 503316465 536870896 582011160 601411532 602079396 671088620 751764415 752599245 802772528 805306344 902117298 1003465660 1006632930 1164022320 1202823064 1204158792 1342177240 1503528830 1505198490 1610612688 1804234596 2006931320 2013265860 2255293245 2405646128 2408317584 2684354480 2914905893 3007057660 3010396980 3608469192 4013862640 4026531720 4510586490 5829811786 6014115320 6020793960 7216938384 8053063440 8744717679 9021172980 11659623572 12028230640 12041587920 14574529465 17489435358 18042345960 23319247144 29149058930 34978870716 36084691920 43723588395 46638494288 58298117860 69957741432 87447176790 90362082683 116596235720 139915482864 174894353580 180724165366 233192471440 271086248049 349788707160 361448330732 451810413415 542172496098 699577414320 722896661464 903620826830 1084344992196 1355431240245 1445793322928 1807241653660 2168689984392 2710862480490 3614483307320 4337379968784 5421724960980 7228966614640 10843449921960 21686899843920
• Sum of all divisors σ(n): 69577974724608
• Sum of proper divisors (its aliquot sum) s(n): 47891074880688
• 21686899843920 is an abundant number, because the sum of its proper divisors (47891074880688) is greater than itself. Its abundance is 26204175036768

Bases of 21686899843920

• Binary: 100111011100101011111111101100010001101010000₂
• Hexadecimal: 0x13B95FF62350
• Base-36: 7OQTO87DC

Squares and roots of 21686899843920

• 21686899843920 squared (21686899843920²) is 470321624840217320360966400
• 21686899843920 cubed (21686899843920³) is 10199817972339509799875122858220364288000
• The square root of 21686899843920 is 4656919.5659706213
• The cube root of 21686899843920 is 27886.8305604873

Scales and comparisons

• 21,686,899,843,920 seconds is equal to 689,576 years, 17 weeks, 2 days, 5 hours, 32 minutes.
• To count from 1 to 21,686,899,843,920 would take you about one million, seven hundred twenty-three thousand, nine hundred forty 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 21686899843920 cubic inches would be around 2323.9 feet tall.

Recreational maths with 21686899843920

• 21686899843920 backwards is 02934899868612
• The number of decimal digits it has is: 14
• The sum of 21686899843920's digits is 75
• More coming soon!