9980

Names of 9980

• Cardinal: 9980 can be written as Nine thousand, nine hundred eighty.

Scientific notation

• Scientific notation: 9.98 × 10³

Factors of 9980

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 506

Divisors of 9980

• Number of divisors d(n): 12
• Complete list of divisors:
  1 2 4 5 10 20 499 998 1996 2495 4990 9980
• Sum of all divisors σ(n): 21000
• Sum of proper divisors (its aliquot sum) s(n): 11020
• 9980 is an abundant number, because the sum of its proper divisors (11020) is greater than itself. Its abundance is 1040

Bases of 9980

• Binary: 10011011111100₂
• Hexadecimal: 0x26FC
• Base-36: 7P8

Squares and roots of 9980

• 9980 squared (9980²) is 99600400
• 9980 cubed (9980³) is 994011992000
• The square root of 9980 is 99.8999499499
• The cube root of 9980 is 21.5299744165

Scales and comparisons

• 9,980 seconds is equal to 2 hours, 46 minutes, 20 seconds.
• To count from 1 to 9,980 would take you about 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 9980 cubic inches would be around 1.8 feet tall.

Recreational maths with 9980

• 9980 backwards is 0899
• The number of decimal digits it has is: 4
• The sum of 9980's digits is 26
• More coming soon!