21355038873

Names of 21355038873

• Cardinal: 21355038873 can be written as Twenty-one billion, three hundred fifty-five million, thirty-eight thousand, eight hundred seventy-three.

Scientific notation

• Scientific notation: 2.1355038873 × 10¹⁰

Factors of 21355038873

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 4016

Divisors of 21355038873

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 7 9 21 23 43 63 69 89 129 161 207 267 301 387 483 623 801 903 989 1449 1869 2047 2709 2967 3827 3851 5607 6141 6923 8901 11481 11553 14329 18423 20769 26789 26957 34443 34659 42987 62307 80367 80871 88021 88573 128961 165593 241101 242613 264063 265719 342739 496779 616147 620011 792189 797157 1028217 1159151 1490337 1848441 1860033 2399173 3084651 3477453 3808639 5545323 5580099 7197519 7882997 10432359 11425917 14737777 21592557 23648991 26660473 34277751 44213331 55180979 70946973 79981419 103164439 132639993 165542937 239944257 309493317 338968871 496628811 928479951 1016906613 2372782097 3050719839 7118346291 21355038873
• Sum of all divisors σ(n): 38073784320
• Sum of proper divisors (its aliquot sum) s(n): 16718745447
• 21355038873 is a deficient number, because the sum of its proper divisors (16718745447) is less than itself. Its deficiency is 4636293426

Bases of 21355038873

• Binary: 10011111000110111000000100010011001₂
• Hexadecimal: 0x4F8DC0899
• Base-36: 9T68LG9

Squares and roots of 21355038873

• 21355038873 squared (21355038873²) is 456037685267341110129
• 21355038873 cubed (21355038873³) is 9738702496437008804155769044617
• The square root of 21355038873 is 146133.6336132105
• The cube root of 21355038873 is 2774.3853898655

Scales and comparisons

• 21,355,038,873 seconds is equal to 679 years, 1 week, 1 day, 19 hours, 14 minutes, 33 seconds.
• To count from 1 to 21,355,038,873 would take you about one thousand, three hundred fifty-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 21355038873 cubic inches would be around 231.2 feet tall.

Recreational maths with 21355038873

• 21355038873 backwards is 37883055312
• The number of decimal digits it has is: 11
• The sum of 21355038873's digits is 45
• More coming soon!