20493990

Names of 20493990

• Cardinal: 20493990 can be written as Twenty million, four hundred ninety-three thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 2.049399 × 10⁷

Factors of 20493990

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 311

Divisors of 20493990

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 5 6 9 10 11 15 18 22 30 33 45 55 66 90 99 110 127 163 165 198 254 326 330 381 489 495 635 762 815 978 990 1143 1270 1397 1467 1630 1793 1905 2286 2445 2794 2934 3586 3810 4191 4890 5379 5715 6985 7335 8382 8965 10758 11430 12573 13970 14670 16137 17930 20701 20955 25146 26895 32274 41402 41910 53790 62103 62865 80685 103505 124206 125730 161370 186309 207010 227711 310515 372618 455422 621030 683133 931545 1138555 1366266 1863090 2049399 2277110 3415665 4098798 6831330 10246995 20493990
• Sum of all divisors σ(n): 58945536
• Sum of proper divisors (its aliquot sum) s(n): 38451546
• 20493990 is an abundant number, because the sum of its proper divisors (38451546) is greater than itself. Its abundance is 17957556

Bases of 20493990

• Binary: 1001110001011011010100110₂
• Hexadecimal: 0x138B6A6
• Base-36: C799I

Squares and roots of 20493990

• 20493990 squared (20493990²) is 420003626120100
• 20493990 cubed (20493990³) is 8607550113669068199000
• The square root of 20493990 is 4527.0288269459
• The cube root of 20493990 is 273.6584356307

Scales and comparisons

• 20,493,990 seconds is equal to 33 weeks, 6 days, 4 hours, 46 minutes, 30 seconds.
• To count from 1 to 20,493,990 would take you about fifty 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 20493990 cubic inches would be around 22.8 feet tall.

Recreational maths with 20493990

• 20493990 backwards is 09939402
• The number of decimal digits it has is: 8
• The sum of 20493990's digits is 36
• More coming soon!