20678490

Names of 20678490

• Cardinal: 20678490 can be written as Twenty million, six hundred seventy-eight thousand, four hundred ninety.

Scientific notation

• Scientific notation: 2.067849 × 10⁷

Factors of 20678490

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 538

Divisors of 20678490

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 21 27 30 35 42 45 49 54 63 70 81 90 98 105 126 135 147 162 189 210 245 270 294 315 378 405 441 490 521 567 630 735 810 882 945 1042 1134 1323 1470 1563 1890 2205 2605 2646 2835 3126 3647 3969 4410 4689 5210 5670 6615 7294 7815 7938 9378 10941 13230 14067 15630 18235 19845 21882 23445 25529 28134 32823 36470 39690 42201 46890 51058 54705 65646 70335 76587 84402 98469 109410 127645 140670 153174 164115 196938 211005 229761 255290 295407 328230 382935 422010 459522 492345 590814 689283 765870 984690 1148805 1378566 1477035 2067849 2297610 2954070 3446415 4135698 6892830 10339245 20678490
• Sum of all divisors σ(n): 64804212
• Sum of proper divisors (its aliquot sum) s(n): 44125722
• 20678490 is an abundant number, because the sum of its proper divisors (44125722) is greater than itself. Its abundance is 23447232

Bases of 20678490

• Binary: 1001110111000011101011010₂
• Hexadecimal: 0x13B875A
• Base-36: CB7MI

Squares and roots of 20678490

• 20678490 squared (20678490²) is 427599948680100
• 20678490 cubed (20678490³) is 8842121262781961049000
• The square root of 20678490 is 4547.3607730199
• The cube root of 20678490 is 274.4771995753

Scales and comparisons

• 20,678,490 seconds is equal to 34 weeks, 1 day, 8 hours, 1 minute, 30 seconds.
• To count from 1 to 20,678,490 would take you about fifty-one weeks!

  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 20678490 cubic inches would be around 22.9 feet tall.

Recreational maths with 20678490

• 20678490 backwards is 09487602
• The number of decimal digits it has is: 8
• The sum of 20678490's digits is 36
• More coming soon!