28013

Names of 28013

• Cardinal: 28013 can be written as Twenty-eight thousand and thirteen.

Scientific notation

• Scientific notation: 2.8013 × 10⁴

Factors of 28013

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 366

Divisors of 28013

• Number of divisors d(n): 4
• Complete list of divisors:
  1 109 257 28013
• Sum of all divisors σ(n): 28380
• Sum of proper divisors (its aliquot sum) s(n): 367
• 28013 is a deficient number, because the sum of its proper divisors (367) is less than itself. Its deficiency is 27646

Bases of 28013

• Binary: 110110101101101₂
• Hexadecimal: 0x6D6D
• Base-36: LM5

Squares and roots of 28013

• 28013 squared (28013²) is 784728169
• 28013 cubed (28013³) is 21982590198197
• The square root of 28013 is 167.3708457287
• The cube root of 28013 is 30.3705884745

Scales and comparisons

• 28,013 seconds is equal to 7 hours, 46 minutes, 53 seconds.
• To count from 1 to 28,013 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 28013 cubic inches would be around 2.5 feet tall.

Recreational maths with 28013

• 28013 backwards is 31082
• The number of decimal digits it has is: 5
• The sum of 28013's digits is 14
• More coming soon!