20791890

Names of 20791890

• Cardinal: 20791890 can be written as Twenty million, seven hundred ninety-one thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 2.079189 × 10⁷

Factors of 20791890

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 229

Divisors of 20791890

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 19 21 27 30 35 38 42 45 54 57 63 70 81 90 95 105 114 126 133 135 162 171 189 190 193 210 266 270 285 315 342 378 386 399 405 513 567 570 579 630 665 798 810 855 945 965 1026 1134 1158 1197 1330 1351 1539 1710 1737 1890 1930 1995 2394 2565 2702 2835 2895 3078 3474 3591 3667 3990 4053 5130 5211 5670 5790 5985 6755 7182 7334 7695 8106 8685 10422 10773 11001 11970 12159 13510 15390 15633 17370 17955 18335 20265 21546 22002 24318 25669 26055 31266 33003 35910 36477 36670 40530 51338 52110 53865 55005 60795 66006 72954 77007 78165 99009 107730 109431 110010 121590 128345 154014 156330 165015 182385 198018 218862 231021 256690 297027 330030 364770 385035 462042 495045 547155 594054 693063 770070 990090 1094310 1155105 1386126 1485135 2079189 2310210 2970270 3465315 4158378 6930630 10395945 20791890
• Sum of all divisors σ(n): 67605120
• Sum of proper divisors (its aliquot sum) s(n): 46813230
• 20791890 is an abundant number, because the sum of its proper divisors (46813230) is greater than itself. Its abundance is 26021340

Bases of 20791890

• Binary: 1001111010100001001010010₂
• Hexadecimal: 0x13D4252
• Base-36: CDN4I

Squares and roots of 20791890

• 20791890 squared (20791890²) is 432302689772100
• 20791890 cubed (20791890³) is 8988389972445628269000
• The square root of 20791890 is 4559.8124961449
• The cube root of 20791890 is 274.9780257923

Scales and comparisons

• 20,791,890 seconds is equal to 34 weeks, 2 days, 15 hours, 31 minutes, 30 seconds.
• To count from 1 to 20,791,890 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 20791890 cubic inches would be around 22.9 feet tall.

Recreational maths with 20791890

• 20791890 backwards is 09819702
• The number of decimal digits it has is: 8
• The sum of 20791890's digits is 36
• More coming soon!