642840788338

Names of 642840788338

• Cardinal: 642840788338 can be written as Six hundred forty-two billion, eight hundred forty million, seven hundred eighty-eight thousand, three hundred thirty-eight.

Scientific notation

• Scientific notation: 6.42840788338 × 10¹¹

Factors of 642840788338

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 128

Divisors of 642840788338

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 7 14 19 38 41 49 59 82 98 118 133 266 287 413 574 779 826 931 1121 1558 1681 1862 2009 2242 2419 2891 3362 3481 4018 4838 5453 5782 6962 7847 10906 11767 15694 16933 23534 24367 31939 33866 38171 45961 48734 54929 63878 66139 76342 82369 91922 99179 109858 118531 132278 142721 164738 170569 198358 205379 223573 237062 285442 321727 341138 410758 447146 462973 643454 694253 925946 999047 1388506 1437653 1565011 1884401 1998094 2252089 2711699 2875306 3130022 3240811 3768802 3902201 4504178 4859771 5423398 5851561 6481622 6993329 7804402 8420539 9719542 10063571 11703122 13190807 13986658 16841078 18981893 20127142 26381614 27315407 37963786 40960927 54630814 58943773 81921854 92335649 111179659 117887546 132873251 159990241 184671298 191207849 222359318 265746502 286726489 319980482 345242099 382415698 412606411 573452978 690484198 778257613 825212822 1119931687 1556515226 2239863374 2416694693 4833389386 5447803291 6559599881 7839521809 10895606582 13119199762 15679043618 16916862851 33833725702 45917199167 91834398334 321420394169 642840788338
• Sum of all divisors σ(n): 1231094527200
• Sum of proper divisors (its aliquot sum) s(n): 588253738862
• 642840788338 is a deficient number, because the sum of its proper divisors (588253738862) is less than itself. Its deficiency is 54587049476

Bases of 642840788338

• Binary: 1001010110101100010010111111110101110010₂
• Hexadecimal: 0x95AC4BFD72
• Base-36: 87BET2SY

Squares and roots of 642840788338

• 642840788338 squared (642840788338²) is 413244279151021316802244
• 642840788338 cubed (642840788338³) is 265650278185611080650997378207430472
• The square root of 642840788338 is 801773.5268378471
• The cube root of 642840788338 is 8630.4705512957

Scales and comparisons

• 642,840,788,338 seconds is equal to 20,440 years, 18 weeks, 21 hours, 38 minutes, 58 seconds.
• To count from 1 to 642,840,788,338 would take you about forty thousand, eight hundred eighty 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 642840788338 cubic inches would be around 719.2 feet tall.

Recreational maths with 642840788338

• 642840788338 backwards is 833887048246
• The number of decimal digits it has is: 12
• The sum of 642840788338's digits is 61
• More coming soon!