28715

Names of 28715

• Cardinal: 28715 can be written as Twenty-eight thousand, seven hundred fifteen.

Scientific notation

• Scientific notation: 2.8715 × 10⁴

Factors of 28715

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 5748

Divisors of 28715

• Number of divisors d(n): 4
• Complete list of divisors:
  1 5 5743 28715
• Sum of all divisors σ(n): 34464
• Sum of proper divisors (its aliquot sum) s(n): 5749
• 28715 is a deficient number, because the sum of its proper divisors (5749) is less than itself. Its deficiency is 22966

Bases of 28715

• Binary: 111000000101011₂
• Hexadecimal: 0x702B
• Base-36: M5N

Squares and roots of 28715

• 28715 squared (28715²) is 824551225
• 28715 cubed (28715³) is 23676988425875
• The square root of 28715 is 169.4550087781
• The cube root of 28715 is 30.6221918847

Scales and comparisons

• 28,715 seconds is equal to 7 hours, 58 minutes, 35 seconds.
• To count from 1 to 28,715 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 28715 cubic inches would be around 2.6 feet tall.

Recreational maths with 28715

• 28715 backwards is 51782
• The number of decimal digits it has is: 5
• The sum of 28715's digits is 23
• More coming soon!