28742

Names of 28742

• Cardinal: 28742 can be written as Twenty-eight thousand, seven hundred forty-two.

Scientific notation

• Scientific notation: 2.8742 × 10⁴

Factors of 28742

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 2062

Divisors of 28742

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 7 14 2053 4106 14371 28742
• Sum of all divisors σ(n): 49296
• Sum of proper divisors (its aliquot sum) s(n): 20554
• 28742 is a deficient number, because the sum of its proper divisors (20554) is less than itself. Its deficiency is 8188

Bases of 28742

• Binary: 111000001000110₂
• Hexadecimal: 0x7046
• Base-36: M6E

Squares and roots of 28742

• 28742 squared (28742²) is 826102564
• 28742 cubed (28742³) is 23743839894488
• The square root of 28742 is 169.5346572239
• The cube root of 28742 is 30.6317866397

Scales and comparisons

• 28,742 seconds is equal to 7 hours, 59 minutes, 2 seconds.
• To count from 1 to 28,742 would take you about seven hours.

  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 28742 cubic inches would be around 2.6 feet tall.

Recreational maths with 28742

• 28742 backwards is 24782
• The number of decimal digits it has is: 5
• The sum of 28742's digits is 23
• More coming soon!