21382067421

Names of 21382067421

• Cardinal: 21382067421 can be written as Twenty-one billion, three hundred eighty-two million, sixty-seven thousand, four hundred twenty-one.

Scientific notation

• Scientific notation: 2.1382067421 × 10¹⁰

Factors of 21382067421

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 358

Divisors of 21382067421

• Number of divisors d(n): 144
• Complete list of divisors:
  1 3 9 11 13 27 33 39 81 99 117 121 143 169 243 297 331 351 363 429 507 891 993 1053 1089 1287 1521 1573 1859 2197 2673 2979 3159 3267 3641 3861 4303 4563 4719 5577 6591 8937 9801 10923 11583 12909 13689 14157 16731 19773 20449 24167 26811 29403 32769 34749 38727 40051 41067 42471 47333 50193 55939 59319 61347 72501 80433 98307 116181 120153 127413 141999 150579 167817 177957 184041 217503 265837 294921 348543 360459 382239 425997 451737 503451 520663 533871 552123 615329 652509 727207 797511 884763 1045629 1081377 1277991 1510353 1561989 1656369 1845987 1957527 2181621 2392533 3244131 3833973 4531059 4685967 4969107 5537961 5872581 6544863 6768619 7177599 7999277 9732393 11501919 13593177 14057901 16613883 19634589 20305857 21532797 23997831 42173703 49841649 58903767 60917571 64598391 71993493 87992047 126521109 149524947 176711301 182752713 215980479 263976141 548258139 647941437 791928423 1644774417 1943824311 2375785269 7127355807 21382067421
• Sum of all divisors σ(n): 38253225920
• Sum of proper divisors (its aliquot sum) s(n): 16871158499
• 21382067421 is a deficient number, because the sum of its proper divisors (16871158499) is less than itself. Its deficiency is 4510908922

Bases of 21382067421

• Binary: 10011111010011110000111010011011101₂
• Hexadecimal: 0x4FA7874DD
• Base-36: 9TMBWT9

Squares and roots of 21382067421

• 21382067421 squared (21382067421²) is 457192807196189591241
• 21382067421 cubed (21382067421³) is 9775727427865179814213493059461
• The square root of 21382067421 is 146226.0832444061
• The cube root of 21382067421 is 2775.5553868655

Scales and comparisons

• 21,382,067,421 seconds is equal to 679 years, 45 weeks, 6 days, 15 hours, 10 minutes, 21 seconds.
• To count from 1 to 21,382,067,421 would take you about one thousand, three hundred fifty-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 21382067421 cubic inches would be around 231.3 feet tall.

Recreational maths with 21382067421

• 21382067421 backwards is 12476028312
• The number of decimal digits it has is: 11
• The sum of 21382067421's digits is 36
• More coming soon!