80821

Names of 80821

• Cardinal: 80821 can be written as Eighty thousand, eight hundred twenty-one.

Scientific notation

• Scientific notation: 8.0821 × 10⁴

Factors of 80821

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 6230

Divisors of 80821

• Number of divisors d(n): 4
• Complete list of divisors:
  1 13 6217 80821
• Sum of all divisors σ(n): 87052
• Sum of proper divisors (its aliquot sum) s(n): 6231
• 80821 is a deficient number, because the sum of its proper divisors (6231) is less than itself. Its deficiency is 74590

Bases of 80821

• Binary: 10011101110110101₂
• Hexadecimal: 0x13BB5
• Base-36: 1QD1

Squares and roots of 80821

• 80821 squared (80821²) is 6532034041
• 80821 cubed (80821³) is 527925523227661
• The square root of 80821 is 284.2903445425
• The cube root of 80821 is 43.2355916677

Scales and comparisons

• 80,821 seconds is equal to 22 hours, 27 minutes, 1 second.
• To count from 1 to 80,821 would take you about twenty-two 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 80821 cubic inches would be around 3.6 feet tall.

Recreational maths with 80821

• 80821 backwards is 12808
• The number of decimal digits it has is: 5
• The sum of 80821's digits is 19
• More coming soon!