21316405838

Names of 21316405838

• Cardinal: 21316405838 can be written as Twenty-one billion, three hundred sixteen million, four hundred five thousand, eight hundred thirty-eight.

Scientific notation

• Scientific notation: 2.1316405838 × 10¹⁰

Factors of 21316405838

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 8473

Divisors of 21316405838

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 7 13 14 26 79 91 158 181 182 362 553 1027 1106 1267 2054 2353 2534 4706 7189 8191 14299 14378 16382 16471 28598 32942 57337 100093 106483 114674 185887 200186 212966 371774 647089 745381 1294178 1301209 1482571 1490762 2602418 2965142 4529623 8412157 9059246 10377997 16824314 19273423 20755994 38546846 58885099 117123109 117770198 134913961 234246218 269827922 819861763 1522600417 1639723526 3045200834 10658202919 21316405838
• Sum of all divisors σ(n): 40076574720
• Sum of proper divisors (its aliquot sum) s(n): 18760168882
• 21316405838 is a deficient number, because the sum of its proper divisors (18760168882) is less than itself. Its deficiency is 2556236956

Bases of 21316405838

• Binary: 10011110110100011101000101001001110₂
• Hexadecimal: 0x4F68E8A4E
• Base-36: 9SJ8K0E

Squares and roots of 21316405838

• 21316405838 squared (21316405838²) is 454389157850320482244
• 21316405838 cubed (21316405838³) is 9685943697124475057876976940472
• The square root of 21316405838 is 146001.3898495489
• The cube root of 21316405838 is 2772.7113489391

Scales and comparisons

• 21,316,405,838 seconds is equal to 677 years, 41 weeks, 2 days, 15 hours, 50 minutes, 38 seconds.
• To count from 1 to 21,316,405,838 would take you about one thousand, three hundred fifty-five 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 21316405838 cubic inches would be around 231.1 feet tall.

Recreational maths with 21316405838

• 21316405838 backwards is 83850461312
• The number of decimal digits it has is: 11
• The sum of 21316405838's digits is 41
• More coming soon!