28485

Names of 28485

• Cardinal: 28485 can be written as Twenty-eight thousand, four hundred eighty-five.

Scientific notation

• Scientific notation: 2.8485 × 10⁴

Factors of 28485

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 219

Divisors of 28485

• Number of divisors d(n): 16
• Complete list of divisors:
  1 3 5 9 15 27 45 135 211 633 1055 1899 3165 5697 9495 28485
• Sum of all divisors σ(n): 50880
• Sum of proper divisors (its aliquot sum) s(n): 22395
• 28485 is a deficient number, because the sum of its proper divisors (22395) is less than itself. Its deficiency is 6090

Bases of 28485

• Binary: 110111101000101₂
• Hexadecimal: 0x6F45
• Base-36: LZ9

Squares and roots of 28485

• 28485 squared (28485²) is 811395225
• 28485 cubed (28485³) is 23112592984125
• The square root of 28485 is 168.7749981485
• The cube root of 28485 is 30.5402139085

Scales and comparisons

• 28,485 seconds is equal to 7 hours, 54 minutes, 45 seconds.
• To count from 1 to 28,485 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 28485 cubic inches would be around 2.5 feet tall.

Recreational maths with 28485

• 28485 backwards is 58482
• 28485 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 28485's digits is 27
• More coming soon!