28457

Names of 28457

• Cardinal: 28457 can be written as Twenty-eight thousand, four hundred fifty-seven.

Scientific notation

• Scientific notation: 2.8457 × 10⁴

Factors of 28457

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 223

Divisors of 28457

• Number of divisors d(n): 8
• Complete list of divisors:
  1 11 13 143 199 2189 2587 28457
• Sum of all divisors σ(n): 33600
• Sum of proper divisors (its aliquot sum) s(n): 5143
• 28457 is a deficient number, because the sum of its proper divisors (5143) is less than itself. Its deficiency is 23314

Bases of 28457

• Binary: 110111100101001₂
• Hexadecimal: 0x6F29
• Base-36: LYH

Squares and roots of 28457

• 28457 squared (28457²) is 809800849
• 28457 cubed (28457³) is 23044502759993
• The square root of 28457 is 168.6920270789
• The cube root of 28457 is 30.5302038875

Scales and comparisons

• 28,457 seconds is equal to 7 hours, 54 minutes, 17 seconds.
• To count from 1 to 28,457 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 28457 cubic inches would be around 2.5 feet tall.

Recreational maths with 28457

• 28457 backwards is 75482
• The number of decimal digits it has is: 5
• The sum of 28457's digits is 26
• More coming soon!