28401

Names of 28401

• Cardinal: 28401 can be written as Twenty-eight thousand, four hundred one.

Scientific notation

• Scientific notation: 2.8401 × 10⁴

Factors of 28401

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 9470

Divisors of 28401

• Number of divisors d(n): 4
• Complete list of divisors:
  1 3 9467 28401
• Sum of all divisors σ(n): 37872
• Sum of proper divisors (its aliquot sum) s(n): 9471
• 28401 is a deficient number, because the sum of its proper divisors (9471) is less than itself. Its deficiency is 18930

Bases of 28401

• Binary: 110111011110001₂
• Hexadecimal: 0x6EF1
• Base-36: LWX

Squares and roots of 28401

• 28401 squared (28401²) is 806616801
• 28401 cubed (28401³) is 22908723765201
• The square root of 28401 is 168.5259623915
• The cube root of 28401 is 30.5101641301

Scales and comparisons

• 28,401 seconds is equal to 7 hours, 53 minutes, 21 seconds.
• To count from 1 to 28,401 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 28401 cubic inches would be around 2.5 feet tall.

Recreational maths with 28401

• 28401 backwards is 10482
• The number of decimal digits it has is: 5
• The sum of 28401's digits is 15
• More coming soon!