72821887138

Names of 72821887138

• Cardinal: 72821887138 can be written as Seventy-two billion, eight hundred twenty-one million, eight hundred eighty-seven thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 7.2821887138 × 10¹⁰

Factors of 72821887138

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 122

Divisors of 72821887138

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 7 11 13 14 19 22 23 26 38 46 47 49 77 91 94 98 121 133 143 154 161 182 209 242 247 253 266 286 299 322 329 418 437 494 506 517 529 539 598 611 637 658 847 874 893 931 1001 1034 1058 1078 1081 1127 1222 1274 1463 1573 1694 1729 1771 1786 1862 2002 2093 2162 2254 2299 2303 2717 2783 2926 3059 3146 3289 3458 3542 3619 3703 4186 4277 4598 4606 4807 5434 5566 5681 5687 5819 5929 6118 6251 6578 6721 6877 7007 7238 7406 7567 8554 9614 9823 10051 10241 11011 11362 11374 11609 11638 11858 11891 12103 12397 12502 13442 13754 14014 14053 14651 15134 16093 19019 19481 19646 20102 20482 20539 21413 22022 23023 23218 23782 24206 24794 24863 25333 25921 28106 29302 29887 29939 32186 33649 36179 38038 38962 39767 39809 40733 41078 42826 43757 46046 47047 48139 49726 50666 51842 52877 52969 59774 59878 62491 64009 67298 68761 70357 72358 73931 75647 77077 79534 79618 81263 81466 83237 87514 94094 96278 98371 105754 105938 108053 110561 112651 124982 127699 128018 130663 130801 133133 136367 137522 140714 143773 147862 151294 154154 154583 161161 162526 166474 174041 196742 209209 216106 221122 225302 225929 235543 253253 255398 261326 261602 266266 267007 272734 273493 278369 278663 285131 287546 309166 322322 323219 329329 336973 348082 370139 418418 437437 448063 451858 471086 472397 481327 492499 506506 517517 529529 534014 546986 556738 557326 568841 570262 582659 646438 658658 673946 687401 688597 740278 756371 773927 832117 874874 893893 896126 914641 915607 944794 962654 984998 1006411 1035034 1059058 1082081 1137682 1165318 1216171 1218287 1374802 1377194 1404689 1437293 1464463 1512742 1547854 1581503 1664234 1700413 1772771 1787786 1829282 1831214 1869049 1914451 2012822 2164162 2262533 2432342 2436574 2485219 2590973 2809378 2874586 2928926 2937077 3008423 3062059 3136441 3163006 3306779 3400826 3545542 3555409 3622619 3706703 3738098 3828902 4525066 4811807 4970438 5181946 5196367 5294597 5417489 5824819 5874154 6016846 6124118 6141161 6257251 6272882 6402487 6409249 6613558 7110818 7245238 7413406 7574567 8513197 9623614 9832823 10061051 10392734 10589194 10834978 11070521 11649638 11902891 12282322 12514502 12804974 12818498 13083343 13401157 15149134 15810223 15837731 17026394 17396533 19665646 20122102 20559539 21058961 22141042 23147453 23805782 24887863 26166686 26802314 31620446 31675462 32307847 33682649 34793066 36374569 39109499 40773733 41119078 42117922 42988127 46294906 49775726 57160037 59592379 64615694 67365298 67552771 68829761 70427357 72749138 78218998 81547466 83320237 85976254 110671561 114320074 119184758 121775731 135105542 137659522 140854714 143916773 147412727 166640474 174215041 221343122 226154929 243551462 254621983 273766493 287833546 294825454 300916889 348430082 400120259 452309858 472869397 509243966 547532986 601833778 743080481 774700927 800240518 945738794 1486160962 1549401854 1583084503 1916365451 2800841813 3166169006 3310085779 3832730902 5201563367 5601683626 6620171558 10403126734 36410943569 72821887138
• Sum of all divisors σ(n): 169033253760
• Sum of proper divisors (its aliquot sum) s(n): 96211366622
• 72821887138 is an abundant number, because the sum of its proper divisors (96211366622) is greater than itself. Its abundance is 23389479484

Bases of 72821887138

• Binary: 1000011110100100001011101000010100010₂
• Hexadecimal: 0x10F485D0A2
• Base-36: XGC9RQA

Squares and roots of 72821887138

• 72821887138 squared (72821887138²) is 5303027246339609831044
• 72821887138 cubed (72821887138³) is 386176451622681990735241416712072
• The square root of 72821887138 is 269855.3077817815
• The cube root of 72821887138 is 4175.9373685101

Scales and comparisons

• 72,821,887,138 seconds is equal to 2,315 years, 26 weeks, 3 days, 21 hours, 58 minutes, 58 seconds.
• To count from 1 to 72,821,887,138 would take you about four thousand, six hundred thirty-one 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 72821887138 cubic inches would be around 348 feet tall.

Recreational maths with 72821887138

• 72821887138 backwards is 83178812827
• The number of decimal digits it has is: 11
• The sum of 72821887138's digits is 55
• More coming soon!