21001377852

Names of 21001377852

• Cardinal: 21001377852 can be written as Twenty-one billion, one million, three hundred seventy-seven thousand, eight hundred fifty-two.

Scientific notation

• Scientific notation: 2.1001377852 × 10¹⁰

Factors of 21001377852

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 5444

Divisors of 21001377852

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 6 7 9 12 13 14 18 21 26 28 36 39 42 49 52 63 78 84 91 98 117 126 147 156 169 182 196 234 252 273 294 338 364 441 468 507 546 588 637 676 819 882 1014 1092 1183 1274 1521 1638 1764 1911 2028 2197 2366 2548 3042 3276 3549 3822 4394 4732 5419 5733 6084 6591 7098 7644 8281 8788 10647 10838 11466 13182 14196 15379 16257 16562 19773 21294 21676 22932 24843 26364 30758 32514 33124 37933 39546 42588 46137 48771 49686 61516 65028 70447 74529 75866 79092 92274 97542 99372 107653 113799 138411 140894 149058 151732 184548 195084 211341 215306 227598 265531 276822 281788 298116 322959 341397 422682 430612 455196 493129 531062 553644 634023 645918 682794 796593 845364 915811 968877 986258 1062124 1268046 1291836 1365588 1479387 1593186 1831622 1937754 1972516 2389779 2536092 2747433 2958774 3186372 3451903 3663244 3875508 4438161 4779558 5494866 5917548 6410677 6903806 8242299 8876322 9559116 10355709 10989732 11905543 12821354 13807612 16484598 17752644 19232031 20711418 23811086 25642708 31067127 32969196 35716629 38464062 41422836 44874739 47622172 57696093 62134254 71433258 76928124 83338801 89749478 107149887 115392186 124268508 134624217 142866516 166677602 179498956 214299774 230784372 250016403 269248434 333355204 403872651 428599548 500032806 538496868 583371607 750049209 807745302 1000065612 1166743214 1500098418 1615490604 1750114821 2333486428 3000196836 3500229642 5250344463 7000459284 10500688926 21001377852
• Sum of all divisors σ(n): 66910225200
• Sum of proper divisors (its aliquot sum) s(n): 45908847348
• 21001377852 is an abundant number, because the sum of its proper divisors (45908847348) is greater than itself. Its abundance is 24907469496

Bases of 21001377852

• Binary: 10011100011110001111001100000111100₂
• Hexadecimal: 0x4E3C7983C
• Base-36: 9NBOEV0

Squares and roots of 21001377852

• 21001377852 squared (21001377852²) is 441057871682476133904
• 21001377852 cubed (21001377852³) is 9262823017802612255090051894208
• The square root of 21001377852 is 144918.5214249719
• The cube root of 21001377852 is 2758.9845145725

Scales and comparisons

• 21,001,377,852 seconds is equal to 667 years, 40 weeks, 3 days, 12 hours, 4 minutes, 12 seconds.
• To count from 1 to 21,001,377,852 would take you about one thousand, three hundred thirty-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 21001377852 cubic inches would be around 229.9 feet tall.

Recreational maths with 21001377852

• 21001377852 backwards is 25877310012
• 21001377852 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21001377852's digits is 36
• More coming soon!