21821313840684428

Names of 21821313840684428

• Cardinal: 21821313840684428 can be written as Twenty-one quadrillion, eight hundred twenty-one trillion, three hundred thirteen billion, eight hundred forty million, six hundred eighty-four thousand, four hundred twenty-eight.

Scientific notation

• Scientific notation: 2.1821313840684428 × 10¹⁶

Factors of 21821313840684428

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 741

Divisors of 21821313840684428

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 7 14 28 49 73 98 146 196 292 511 659 1022 1318 2044 2636 3577 4613 5329 7154 9226 10658 14308 18452 21316 32291 37303 48107 64582 74606 96214 129164 149212 192428 261121 336749 389017 434281 522242 673498 778034 868562 1044484 1346996 1556068 1737124 2357243 2723119 3039967 3511811 4714486 5446238 6079934 7023622 9428972 10892476 12159868 14047244 19061833 21279769 24582677 31702513 38123666 42559538 49165354 63405026 76247332 85119076 98330708 126810052 172078739 221917591 256362203 286191179 344157478 443835182 512724406 572382358 688314956 887670364 1025448812 1144764716 1553423137 1794535421 2003338253 2314283449 3106846274 3589070842 4006676506 4628566898 6213692548 7178141684 8013353012 9257133796 12561747947 14023367771 16199984143 20891956067 25123495894 28046735542 32399968286 41783912134 50246991788 56093471084 64799936572 83567824268 113399889001 146243692469 168942691777 226799778002 292487384938 337885383554 453599556004 584974769876 675770767108 1023705847283 1182598842439 1525112792891 2047411694566 2365197684878 3050225585782 4094823389132 4730395369756 6100451171564 8278191897073 10675789550237 16556383794146 21351579100474 33112767588292 42703158200948 74730526851659 111333233881043 149461053703318 222666467762086 298922107406636 445332935524172 779332637167301 1558665274334602 3117330548669204 5455328460171107 10910656920342214 21821313840684428
• Sum of all divisors σ(n): 45107378625909600
• Sum of proper divisors (its aliquot sum) s(n): 23286064785225172
• 21821313840684428 is an abundant number, because the sum of its proper divisors (23286064785225172) is greater than itself. Its abundance is 1464750944540744

Bases of 21821313840684428

• Binary: 1001101100001100101111010001100000000011001110110001100₂
• Hexadecimal: 0x4D865E8C019D8C
• Base-36: 5YV0D6R46MK

Squares and roots of 21821313840684428

• 21821313840684428 squared (21821313840684428²) is 476169737733645781978235481687184
• 21821313840684428 cubed (21821313840684428³) is 10390649288522278837196856210587414524086755970752
• The square root of 21821313840684428 is 147720390.7410362491
• The cube root of 21821313840684428 is 279443.2552845491

Scales and comparisons

• 21,821,313,840,684,428 seconds is equal to 693,850,282 years, 19 weeks, 4 days, 16 hours, 47 minutes, 8 seconds.
• To count from 1 to 21,821,313,840,684,428 would take you about two billion, eighty-one million, five hundred fifty thousand, eight hundred forty-seven 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 21821313840684428 cubic inches would be around 23286.9 feet tall.

Recreational maths with 21821313840684428

• 21821313840684428 backwards is 82448604831312812
• The number of decimal digits it has is: 17
• The sum of 21821313840684428's digits is 65
• More coming soon!