18628020

Names of 18628020

• Cardinal: 18628020 can be written as Eighteen million, six hundred twenty-eight thousand and twenty.

Scientific notation

• Scientific notation: 1.862802 × 10⁷

Factors of 18628020

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2844

Divisors of 18628020

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 30 36 37 45 60 74 90 111 148 180 185 222 333 370 444 555 666 740 1110 1332 1665 2220 2797 3330 5594 6660 8391 11188 13985 16782 25173 27970 33564 41955 50346 55940 83910 100692 103489 125865 167820 206978 251730 310467 413956 503460 517445 620934 931401 1034890 1241868 1552335 1862802 2069780 3104670 3725604 4657005 6209340 9314010 18628020
• Sum of all divisors σ(n): 58052904
• Sum of proper divisors (its aliquot sum) s(n): 39424884
• 18628020 is an abundant number, because the sum of its proper divisors (39424884) is greater than itself. Its abundance is 20796864

Bases of 18628020

• Binary: 1000111000011110110110100₂
• Hexadecimal: 0x11C3DB4
• Base-36: B39H0

Squares and roots of 18628020

• 18628020 squared (18628020²) is 347003129120400
• 18628020 cubed (18628020³) is 6463981229317393608000
• The square root of 18628020 is 4316.0189990313
• The cube root of 18628020 is 265.0872858307

Scales and comparisons

• 18,628,020 seconds is equal to 30 weeks, 5 days, 14 hours, 27 minutes.
• To count from 1 to 18,628,020 would take you about forty-six 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 18628020 cubic inches would be around 22.1 feet tall.

Recreational maths with 18628020

• 18628020 backwards is 02082681
• The number of decimal digits it has is: 8
• The sum of 18628020's digits is 27
• More coming soon!