821420643471372

Names of 821420643471372

• Cardinal: 821420643471372 can be written as Eight hundred twenty-one trillion, four hundred twenty billion, six hundred forty-three million, four hundred seventy-one thousand, three hundred seventy-two.

Scientific notation

• Scientific notation: 8.21420643471372 × 10¹⁴

Factors of 821420643471372

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1838567

Divisors of 821420643471372

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 18 21 27 28 36 42 47 54 63 81 84 94 108 126 141 162 188 189 252 282 324 329 378 423 564 567 658 756 846 987 1134 1269 1316 1692 1974 2268 2538 2961 3807 3948 4201 5076 5922 7614 8402 8883 11844 12603 15228 16804 17766 25206 26649 29407 35532 37809 50412 53298 58814 75618 88221 106596 113427 117628 151236 176442 197447 226854 264663 340281 352884 394894 453708 529326 592341 680562 789788 793989 1058652 1184682 1361124 1382129 1587978 1777023 1834307 2369364 2381967 2764258 3175956 3554046 3668614 4146387 4763934 5331069 5502921 5528516 7108092 7337228 8292774 9527868 10662138 11005842 12439161 12840149 15993207 16508763 16585548 21324276 22011684 24878322 25680298 31986414 33017526 37317483 38520447 49526289 49756644 51360596 63972828 66035052 74634966 77040894 86212429 99052578 111952449 115561341 148578867 149269932 154081788 172424858 198105156 223904898 231122682 258637287 297157734 344849716 346684023 447809796 462245364 517274574 594315468 603487003 693368046 775911861 1034549148 1040052069 1206974006 1386736092 1551823722 1810461009 2080104138 2327735583 2413948012 3103647444 3620922018 4160208276 4655471166 5431383027 6983206749 7241844036 7705923707 9310942332 10862766054 13966413498 15411847414 16294149081 21725532108 23117771121 27932826996 30823694828 32588298162 46235542242 48882447243 53941465949 65176596324 69353313363 92471084484 97764894486 107882931898 138706626726 161824397847 195529788972 208059940089 215765863796 277413253452 323648795694 362178414229 416119880178 485473193541 624179820267 647297591388 724356828458 832239760356 970946387082 1086535242687 1248359640534 1448713656916 1456419580623 1941892774164 2173070485374 2496719281068 2535248899603 2912839161246 3259605728061 4346140970748 4369258741869 5070497799206 5825678322492 6519211456122 7605746698809 8738517483738 9778817184183 10140995598412 13038422912244 15211493397618 17477034967476 19557634368366 22817240096427 29336451552549 30422986795236 39115268736732 45634480192854 58672903105098 68451720289281 91268960385708 117345806210196 136903440578562 205355160867843 273806881157124 410710321735686 821420643471372
• Sum of all divisors σ(n): 2506934245229568
• Sum of proper divisors (its aliquot sum) s(n): 1685513601758196
• 821420643471372 is an abundant number, because the sum of its proper divisors (1685513601758196) is greater than itself. Its abundance is 864092958286824

Bases of 821420643471372

• Binary: 10111010110001001111100101101010100101000000001100₂
• Hexadecimal: 0x2EB13E5AA500C
• Base-36: 8363FMO4R0

Squares and roots of 821420643471372

• 821420643471372 squared (821420643471372²) is 674731873520922831886583562384
• 821420643471372 cubed (821420643471372³) is 554238689718200819206962809998738559880070848
• The square root of 821420643471372 is 28660436.9030092073
• The cube root of 821420643471372 is 93653.0382293217

Scales and comparisons

• 821,420,643,471,372 seconds is equal to 26,118,635 years, 33 weeks, 2 days, 12 hours, 16 minutes, 12 seconds.
• To count from 1 to 821,420,643,471,372 would take you about sixty-five million, two hundred ninety-six thousand, five hundred eighty-nine 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 821420643471372 cubic inches would be around 7804.4 feet tall.

Recreational maths with 821420643471372

• 821420643471372 backwards is 273174346024128
• 821420643471372 is a Harshad number.
• The number of decimal digits it has is: 15
• The sum of 821420643471372's digits is 54
• More coming soon!