21384508068

Names of 21384508068

• Cardinal: 21384508068 can be written as Twenty-one billion, three hundred eighty-four million, five hundred eight thousand and sixty-eight.

Scientific notation

• Scientific notation: 2.1384508068 × 10¹⁰

Factors of 21384508068

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 3011

Divisors of 21384508068

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 6 7 9 11 12 14 18 21 22 28 33 36 42 44 49 63 66 77 84 98 99 126 132 147 154 196 198 231 252 294 308 396 431 441 462 539 588 693 862 882 924 1078 1293 1386 1617 1724 1764 2156 2557 2586 2772 3017 3234 3879 4741 4851 5114 5172 6034 6468 7671 7758 9051 9482 9702 10228 12068 14223 15342 15516 17899 18102 18964 19404 21119 23013 27153 28127 28446 30684 33187 35798 36204 42238 42669 46026 53697 54306 56254 56892 63357 66374 71596 84381 84476 85338 92052 99561 107394 108612 112508 125293 126714 132748 161091 168762 170676 190071 196889 199122 214788 232309 250586 253143 253428 298683 322182 337524 375879 380142 393778 398244 464618 501172 506286 590667 597366 644364 696927 751758 760284 787556 929236 1012572 1102067 1127637 1181334 1194732 1378223 1393854 1503516 1772001 2090781 2204134 2255274 2362668 2756446 2787708 3306201 3544002 4134669 4181562 4408268 4510548 5512892 6612402 7088004 7714469 8269338 8363124 9918603 12122737 12404007 13224804 15428938 16538676 19837206 23143407 24245474 24808014 30857876 36368211 39674412 46286814 48490948 49616028 54001283 69430221 72736422 84859159 92573628 108002566 109104633 138860442 145472844 162003849 169718318 216005132 218209266 254577477 277720884 324007698 339436636 436418532 486011547 509154954 594014113 648015396 763732431 972023094 1018309908 1188028226 1527464862 1782042339 1944046188 2376056452 3054929724 3564084678 5346127017 7128169356 10692254034 21384508068
• Sum of all divisors σ(n): 68783105664
• Sum of proper divisors (its aliquot sum) s(n): 47398597596
• 21384508068 is an abundant number, because the sum of its proper divisors (47398597596) is greater than itself. Its abundance is 26014089528

Bases of 21384508068

• Binary: 10011111010100111011011001010100100₂
• Hexadecimal: 0x4FA9DB2A4
• Base-36: 9TNS810

Squares and roots of 21384508068

• 21384508068 squared (21384508068²) is 457297185310357092624
• 21384508068 cubed (21384508068³) is 9779075348743022331178951290432
• The square root of 21384508068 is 146234.4284633411
• The cube root of 21384508068 is 2775.6609877111

Scales and comparisons

• 21,384,508,068 seconds is equal to 679 years, 49 weeks, 6 days, 21 hours, 7 minutes, 48 seconds.
• To count from 1 to 21,384,508,068 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 21384508068 cubic inches would be around 231.3 feet tall.

Recreational maths with 21384508068

• 21384508068 backwards is 86080548312
• The number of decimal digits it has is: 11
• The sum of 21384508068's digits is 45
• More coming soon!