21086940672

Names of 21086940672

• Cardinal: 21086940672 can be written as Twenty-one billion, eighty-six million, nine hundred forty thousand, six hundred seventy-two.

Scientific notation

• Scientific notation: 2.1086940672 × 10¹⁰

Factors of 21086940672

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 1604

Divisors of 21086940672

• Number of divisors d(n): 360
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 49 56 61 63 64 72 84 96 98 112 122 126 128 144 147 168 183 192 196 224 244 252 256 288 294 336 366 384 392 427 441 448 488 504 512 549 576 588 672 732 768 784 854 882 896 976 1008 1098 1152 1176 1281 1344 1464 1531 1536 1568 1708 1764 1792 1952 2016 2196 2304 2352 2562 2688 2928 2989 3062 3136 3416 3528 3584 3843 3904 4032 4392 4593 4608 4704 5124 5376 5856 5978 6124 6272 6832 7056 7686 7808 8064 8784 8967 9186 9408 10248 10717 10752 11712 11956 12248 12544 13664 13779 14112 15372 15616 16128 17568 17934 18372 18816 20496 21434 23424 23912 24496 25088 26901 27328 27558 28224 30744 31232 32151 32256 35136 35868 36744 37632 40992 42868 46848 47824 48992 53802 54656 55116 56448 61488 64302 70272 71736 73488 75019 75264 81984 85736 93391 93696 95648 96453 97984 107604 109312 110232 112896 122976 128604 140544 143472 146976 150038 163968 171472 186782 191296 192906 195968 215208 218624 220464 225057 225792 245952 257208 280173 281088 286944 293952 300076 327936 342944 373564 382592 385812 391936 430416 440928 450114 491904 514416 560346 573888 587904 600152 653737 655872 675171 685888 747128 765184 771624 783872 840519 860832 881856 900228 983808 1028832 1120692 1147776 1175808 1200304 1307474 1350342 1371776 1494256 1530368 1543248 1681038 1721664 1763712 1800456 1961211 1967616 2057664 2241384 2295552 2351616 2400608 2614948 2700684 2743552 2988512 3086496 3362076 3443328 3527424 3600912 3922422 4115328 4482768 4576159 4591104 4801216 5229896 5401368 5487104 5883633 5977024 6172992 6724152 6886656 7054848 7201824 7844844 8230656 8965536 9152318 9602432 10459792 10802736 11767266 11954048 12345984 13448304 13728477 13773312 14403648 15689688 16461312 17931072 18304636 19204864 20919584 21605472 23534532 23908096 24691968 26896608 27456954 28807296 31379376 35862144 36609272 38409728 41185431 41839168 43210944 47069064 47816192 49383936 53793216 54913908 57614592 62758752 71724288 73218544 82370862 83678336 86421888 94138128 107586432 109827816 115229184 125517504 143448576 146437088 164741724 167356672 172843776 188276256 215172864 219655632 251035008 292874176 329483448 334713344 345687552 376552512 430345728 439311264 502070016 585748352 658966896 753105024 878622528 1004140032 1171496704 1317933792 1506210048 1757245056 2342993408 2635867584 3012420096 3514490112 5271735168 7028980224 10543470336 21086940672
• Sum of all divisors σ(n): 72001956312
• Sum of proper divisors (its aliquot sum) s(n): 50915015640
• 21086940672 is an abundant number, because the sum of its proper divisors (50915015640) is greater than itself. Its abundance is 29828074968

Bases of 21086940672

• Binary: 10011101000111000010010111000000000₂
• Hexadecimal: 0x4E8E12E00
• Base-36: 9OQMBK0

Squares and roots of 21086940672

• 21086940672 squared (21086940672²) is 444659066904447811584
• 21086940672 cubed (21086940672³) is 9376499363080969695792042344448
• The square root of 21086940672 is 145213.4314448905
• The cube root of 21086940672 is 2762.7262790481

Scales and comparisons

• 21,086,940,672 seconds is equal to 670 years, 25 weeks, 6 days, 19 hours, 31 minutes, 12 seconds.
• To count from 1 to 21,086,940,672 would take you about one thousand, three 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 21086940672 cubic inches would be around 230.2 feet tall.

Recreational maths with 21086940672

• 21086940672 backwards is 27604968012
• The number of decimal digits it has is: 11
• The sum of 21086940672's digits is 45
• More coming soon!