28021318

Names of 28021318

• Cardinal: 28021318 can be written as Twenty-eight million, twenty-one thousand, three hundred eighteen.

Scientific notation

• Scientific notation: 2.8021318 × 10⁷

Factors of 28021318

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 1077758

Divisors of 28021318

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 13 26 1077743 2155486 14010659 28021318
• Sum of all divisors σ(n): 45265248
• Sum of proper divisors (its aliquot sum) s(n): 17243930
• 28021318 is a deficient number, because the sum of its proper divisors (17243930) is less than itself. Its deficiency is 10777388

Bases of 28021318

• Binary: 1101010111001001001000110₂
• Hexadecimal: 0x1AB9246
• Base-36: GOLDY

Squares and roots of 28021318

• 28021318 squared (28021318²) is 785194262457124
• 28021318 cubed (28021318³) is 22002178120086532969432
• The square root of 28021318 is 5293.5166005219
• The cube root of 28021318 is 303.7359419281

Scales and comparisons

• 28,021,318 seconds is equal to 46 weeks, 2 days, 7 hours, 41 minutes, 58 seconds.
• To count from 1 to 28,021,318 would take you about seventeen 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 28021318 cubic inches would be around 25.3 feet tall.

Recreational maths with 28021318

• 28021318 backwards is 81312082
• The number of decimal digits it has is: 8
• The sum of 28021318's digits is 25
• More coming soon!