21238527807

Names of 21238527807

• Cardinal: 21238527807 can be written as Twenty-one billion, two hundred thirty-eight million, five hundred twenty-seven thousand, eight hundred seven.

Scientific notation

• Scientific notation: 2.1238527807 × 10¹⁰

Factors of 21238527807

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 90

Divisors of 21238527807

• Number of divisors d(n): 180
• Complete list of divisors:
  1 3 7 9 19 21 27 49 57 61 63 81 133 147 171 183 189 243 361 399 427 441 513 549 567 729 931 1083 1159 1197 1281 1323 1539 1647 1701 2187 2527 2793 2989 3249 3477 3591 3843 3969 4617 4941 5103 6561 7581 8113 8379 8967 9747 10431 10773 11529 11907 13851 14823 15309 17689 19683 22021 22743 24339 25137 26901 29241 31293 32319 34587 35721 41553 44469 45927 53067 56791 66063 68229 73017 75411 80703 87723 93879 96957 103761 107163 124659 133407 137781 154147 159201 170373 198189 204687 219051 226233 242109 263169 281637 290871 311283 321489 373977 400221 462441 477603 511119 594567 614061 657153 678699 726327 789507 844911 872613 933849 964467 1079029 1200663 1387323 1432809 1533357 1783701 1842183 1971459 2036097 2178981 2368521 2534733 2617839 2801547 3237087 4161969 4298427 4600071 5351103 5526549 5914377 6108291 6536943 7105563 7604199 8404641 9711261 12485907 12895281 13800213 16053309 16579647 17743131 18324873 19610829 22812597 29133783 37457721 38685843 41400639 48159927 49738941 53229393 58832487 87401349 112373163 116057529 124201917 144479781 159688179 262204047 337119489 348172587 372605751 433439343 786612141 1011358467 1117817253 2359836423 3034075401 7079509269 21238527807
• Sum of all divisors σ(n): 39752707896
• Sum of proper divisors (its aliquot sum) s(n): 18514180089
• 21238527807 is a deficient number, because the sum of its proper divisors (18514180089) is less than itself. Its deficiency is 2724347718

Bases of 21238527807

• Binary: 10011110001111010100011011100111111₂
• Hexadecimal: 0x4F1EA373F
• Base-36: 9R8VCXR

Squares and roots of 21238527807

• 21238527807 squared (21238527807²) is 451075063408712229249
• 21238527807 cubed (21238527807³) is 9580170277250222886965845226943
• The square root of 21238527807 is 145734.4427614831
• The cube root of 21238527807 is 2769.3305913681

Scales and comparisons

• 21,238,527,807 seconds is equal to 675 years, 16 weeks, 4 days, 7 hours, 3 minutes, 27 seconds.
• To count from 1 to 21,238,527,807 would take you about one thousand, three hundred fifty 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 21238527807 cubic inches would be around 230.8 feet tall.

Recreational maths with 21238527807

• 21238527807 backwards is 70872583212
• The number of decimal digits it has is: 11
• The sum of 21238527807's digits is 45
• More coming soon!