21010479840

Names of 21010479840

• Cardinal: 21010479840 can be written as Twenty-one billion, ten million, four hundred seventy-nine thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.101047984 × 10¹⁰

Factors of 21010479840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 25750

Divisors of 21010479840

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 27 28 30 32 35 36 40 42 45 48 54 56 60 63 70 72 80 81 84 90 96 105 108 112 120 126 135 140 144 160 162 168 180 189 210 216 224 240 243 252 270 280 288 315 324 336 360 378 405 420 432 480 486 504 540 560 567 630 648 672 720 729 756 810 840 864 945 972 1008 1080 1120 1134 1215 1260 1296 1440 1458 1512 1620 1680 1701 1890 1944 2016 2160 2268 2430 2520 2592 2835 2916 3024 3240 3360 3402 3645 3780 3888 4320 4536 4860 5040 5103 5670 5832 6048 6480 6804 7290 7560 7776 8505 9072 9720 10080 10206 11340 11664 12960 13608 14580 15120 17010 18144 19440 20412 22680 23328 25515 25733 27216 29160 30240 34020 38880 40824 45360 51030 51466 54432 58320 68040 77199 81648 90720 102060 102932 116640 128665 136080 154398 163296 180131 204120 205864 231597 257330 272160 308796 360262 385995 408240 411728 463194 514660 540393 617592 694791 720524 771990 816480 823456 900655 926388 1029320 1080786 1157985 1235184 1389582 1441048 1543980 1621179 1801310 1852776 2058640 2084373 2161572 2315970 2470368 2701965 2779164 2882096 3087960 3242358 3473955 3602620 3705552 4117280 4168746 4323144 4631940 4863537 5403930 5558328 5764192 6175920 6253119 6484716 6947910 7205240 7411104 8105895 8337492 8646288 9263880 9727074 10421865 10807860 11116656 12351840 12506238 12969432 13895820 14410480 14590611 16211790 16674984 17292576 18527760 18759357 19454148 20843730 21615720 22233312 24317685 25012476 25938864 27791640 28820960 29181222 31265595 32423580 33349968 37055520 37518714 38908296 41687460 43231440 43771833 48635370 50024952 51877728 55583280 58362444 62531190 64847160 66699936 72953055 75037428 77816592 83374920 86462880 87543666 93796785 97270740 100049904 111166560 116724888 125062380 129694320 131315499 145906110 150074856 155633184 166749840 175087332 187593570 194541480 200099808 218859165 233449776 250124760 259388640 262630998 291812220 300149712 333499680 350174664 375187140 389082960 437718330 466899552 500249520 525261996 583624440 600299424 656577495 700349328 750374280 778165920 875436660 1000499040 1050523992 1167248880 1313154990 1400698656 1500748560 1750873320 2101047984 2334497760 2626309980 3001497120 3501746640 4202095968 5252619960 7003493280 10505239920 21010479840
• Sum of all divisors σ(n): 85056840288
• Sum of proper divisors (its aliquot sum) s(n): 64046360448
• 21010479840 is an abundant number, because the sum of its proper divisors (64046360448) is greater than itself. Its abundance is 43035880608

Bases of 21010479840

• Binary: 10011100100010100100111101011100000₂
• Hexadecimal: 0x4E4527AE0
• Base-36: 9NH3I00

Squares and roots of 21010479840

• 21010479840 squared (21010479840²) is 441440263107046425600
• 21010479840 cubed (21010479840³) is 9274871748574894687012859904000
• The square root of 21010479840 is 144949.9218350941
• The cube root of 21010479840 is 2759.3830378999

Scales and comparisons

• 21,010,479,840 seconds is equal to 668 years, 3 weeks, 3 days, 20 hours, 24 minutes.
• To count from 1 to 21,010,479,840 would take you about one thousand, three hundred thirty-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 21010479840 cubic inches would be around 229.9 feet tall.

Recreational maths with 21010479840

• 21010479840 backwards is 04897401012
• 21010479840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21010479840's digits is 36
• More coming soon!