20490820

Names of 20490820

• Cardinal: 20490820 can be written as Twenty million, four hundred ninety thousand, eight hundred twenty.

Scientific notation

• Scientific notation: 2.049082 × 10⁷

Factors of 20490820

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 146

Divisors of 20490820

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 7 10 14 20 28 29 35 49 58 70 98 103 116 140 145 196 203 206 245 290 343 406 412 490 515 580 686 721 812 980 1015 1030 1372 1421 1442 1715 2030 2060 2842 2884 2987 3430 3605 4060 5047 5684 5974 6860 7105 7210 9947 10094 11948 14210 14420 14935 19894 20188 20909 25235 28420 29870 35329 39788 41818 49735 50470 59740 70658 83636 99470 100940 104545 141316 146363 176645 198940 209090 292726 353290 418180 585452 706580 731815 1024541 1463630 2049082 2927260 4098164 5122705 10245410 20490820
• Sum of all divisors σ(n): 52416000
• Sum of proper divisors (its aliquot sum) s(n): 31925180
• 20490820 is an abundant number, because the sum of its proper divisors (31925180) is greater than itself. Its abundance is 11434360

Bases of 20490820

• Binary: 1001110001010101001000100₂
• Hexadecimal: 0x138AA44
• Base-36: C76TG

Squares and roots of 20490820

• 20490820 squared (20490820²) is 419873704272400
• 20490820 cubed (20490820³) is 8603556496978979368000
• The square root of 20490820 is 4526.6786941421
• The cube root of 20490820 is 273.6443251205

Scales and comparisons

• 20,490,820 seconds is equal to 33 weeks, 6 days, 3 hours, 53 minutes, 40 seconds.
• To count from 1 to 20,490,820 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 20490820 cubic inches would be around 22.8 feet tall.

Recreational maths with 20490820

• 20490820 backwards is 02809402
• The number of decimal digits it has is: 8
• The sum of 20490820's digits is 25
• More coming soon!