28399

Names of 28399

• Cardinal: 28399 can be written as Twenty-eight thousand, three hundred ninety-nine.

Scientific notation

• Scientific notation: 2.8399 × 10⁴

Factors of 28399

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 4064

Divisors of 28399

• Number of divisors d(n): 4
• Complete list of divisors:
  1 7 4057 28399
• Sum of all divisors σ(n): 32464
• Sum of proper divisors (its aliquot sum) s(n): 4065
• 28399 is a deficient number, because the sum of its proper divisors (4065) is less than itself. Its deficiency is 24334

Bases of 28399

• Binary: 110111011101111₂
• Hexadecimal: 0x6EEF
• Base-36: LWV

Squares and roots of 28399

• 28399 squared (28399²) is 806503201
• 28399 cubed (28399³) is 22903884405199
• The square root of 28399 is 168.5200284833
• The cube root of 28399 is 30.5094479375

Scales and comparisons

• 28,399 seconds is equal to 7 hours, 53 minutes, 19 seconds.
• To count from 1 to 28,399 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 28399 cubic inches would be around 2.5 feet tall.

Recreational maths with 28399

• 28399 backwards is 99382
• The number of decimal digits it has is: 5
• The sum of 28399's digits is 31
• More coming soon!