28971

Names of 28971

• Cardinal: 28971 can be written as Twenty-eight thousand, nine hundred seventy-one.

Scientific notation

• Scientific notation: 2.8971 × 10⁴

Factors of 28971

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 69

Divisors of 28971

• Number of divisors d(n): 16
• Complete list of divisors:
  1 3 9 27 29 37 87 111 261 333 783 999 1073 3219 9657 28971
• Sum of all divisors σ(n): 45600
• Sum of proper divisors (its aliquot sum) s(n): 16629
• 28971 is a deficient number, because the sum of its proper divisors (16629) is less than itself. Its deficiency is 12342

Bases of 28971

• Binary: 111000100101011₂
• Hexadecimal: 0x712B
• Base-36: MCR

Squares and roots of 28971

• 28971 squared (28971²) is 839318841
• 28971 cubed (28971³) is 24315906142611
• The square root of 28971 is 170.2086954301
• The cube root of 28971 is 30.7129237851

Scales and comparisons

• 28,971 seconds is equal to 8 hours, 2 minutes, 51 seconds.
• To count from 1 to 28,971 would take you about eight 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 28971 cubic inches would be around 2.6 feet tall.

Recreational maths with 28971

• 28971 backwards is 17982
• 28971 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 28971's digits is 27
• More coming soon!