72157220856

Names of 72157220856

• Cardinal: 72157220856 can be written as Seventy-two billion, one hundred fifty-seven million, two hundred twenty thousand, eight hundred fifty-six.

Scientific notation

• Scientific notation: 7.2157220856 × 10¹⁰

Factors of 72157220856

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 76

Divisors of 72157220856

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 18 21 23 24 28 36 41 42 46 49 56 63 69 72 82 84 92 98 123 126 138 147 161 164 168 184 196 207 246 252 276 287 294 322 328 369 392 414 441 483 492 504 529 552 574 588 644 738 828 861 882 943 966 984 1058 1127 1148 1176 1288 1449 1476 1587 1656 1681 1722 1764 1886 1932 2009 2116 2254 2296 2583 2829 2898 2952 3174 3362 3381 3444 3528 3703 3772 3864 4018 4232 4508 4761 5043 5166 5658 5796 6027 6348 6601 6724 6762 6888 7406 7544 8036 8487 9016 9522 10086 10143 10332 11109 11316 11592 11767 12054 12167 12696 13202 13448 13524 14812 15129 16072 16974 18081 19044 19803 20172 20286 20664 21689 22218 22632 23534 24108 24334 25921 26404 27048 29624 30258 33327 33948 35301 36162 36501 38088 38663 39606 40344 40572 43378 44436 46207 47068 48216 48668 51842 52808 59409 60516 65067 66654 67896 70602 72324 73002 77326 77763 79212 81144 82369 85169 86756 88872 92414 94136 97336 103684 105903 109503 115989 118818 121032 130134 133308 138621 141204 144648 146004 151823 154652 155526 158424 164738 170338 173512 184828 195201 207368 211806 219006 231978 233289 237636 247107 255507 260268 266616 270641 277242 282408 292008 303646 309304 311052 329476 340676 347967 369656 390402 415863 423612 438012 455469 463956 466578 475272 494214 498847 511014 520536 541282 554484 596183 607292 622104 658952 681352 695934 741321 766521 780804 811923 831726 847224 876024 889249 910938 927912 933156 988428 997694 1022028 1062761 1082564 1108968 1192366 1214584 1366407 1391868 1482642 1496541 1533042 1561608 1623846 1663452 1778498 1788549 1821876 1866312 1894487 1976856 1995388 2044056 2125522 2165128 2384732 2435769 2667747 2732814 2783736 2965284 2993082 3066084 3188283 3247692 3326904 3491929 3556996 3577098 3643752 3788974 3990776 4251044 4489623 4769464 4871538 5335494 5365647 5465628 5683461 5930568 5986164 6132168 6224743 6376566 6495384 6983858 7113992 7154196 7577948 8003241 8502088 8979246 9564849 9743076 10475787 10670988 10731294 10931256 11366922 11972328 12449486 12753132 13967716 14308392 15155896 16006482 17050383 17958492 18674229 19129698 19486152 20452727 20951574 21341976 21462588 22733844 24443503 24898972 25506264 27935432 31427361 32012964 34100766 35916984 37348458 38259396 40905454 41903148 42925176 43573201 45467688 48887006 49797944 56022687 61358181 62854722 64025928 68201532 73330509 74696916 76518792 81810908 83806296 87146402 97774012 112045374 122716362 125709444 130719603 136403064 143169089 146661018 149393832 163621816 174292804 184074543 195548024 219991527 224090748 245432724 251418888 261439206 286338178 293322036 348585608 368149086 392158809 429507267 439983054 448181496 490865448 522878412 572676356 586644072 736298172 784317618 859014534 879966108 1002183623 1045756824 1145352712 1288521801 1472596344 1568635236 1718029068 1759932216 2004367246 2577043602 3006550869 3137270472 3436058136 4008734492 5154087204 6013101738 8017468984 9019652607 10308174408 12026203476 18039305214 24052406952 36078610428 72157220856
• Sum of all divisors σ(n): 243602564400
• Sum of proper divisors (its aliquot sum) s(n): 171445343544
• 72157220856 is an abundant number, because the sum of its proper divisors (171445343544) is greater than itself. Its abundance is 99288122688

Bases of 72157220856

• Binary: 1000011001100111001111100111111111000₂
• Hexadecimal: 0x10CCE7CFF8
• Base-36: X5CJNY0

Squares and roots of 72157220856

• 72157220856 squared (72157220856²) is 5206664521661561372736
• 72157220856 cubed (72157220856³) is 375698441812632880058310088982016
• The square root of 72157220856 is 268620.9613116593
• The cube root of 72157220856 is 4163.1935239645

Scales and comparisons

• 72,157,220,856 seconds is equal to 2,294 years, 19 weeks, 4 days, 27 minutes, 36 seconds.
• To count from 1 to 72,157,220,856 would take you about four thousand, five hundred eighty-eight 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 72157220856 cubic inches would be around 346.9 feet tall.

Recreational maths with 72157220856

• 72157220856 backwards is 65802275127
• The number of decimal digits it has is: 11
• The sum of 72157220856's digits is 45
• More coming soon!