20280

Names of 20280

• Cardinal: 20280 can be written as Twenty thousand, two hundred eighty.

Scientific notation

• Scientific notation: 2.028 × 10⁴

Factors of 20280

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 23

Divisors of 20280

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 13 15 20 24 26 30 39 40 52 60 65 78 104 120 130 156 169 195 260 312 338 390 507 520 676 780 845 1014 1352 1560 1690 2028 2535 3380 4056 5070 6760 10140 20280
• Sum of all divisors σ(n): 65880
• Sum of proper divisors (its aliquot sum) s(n): 45600
• 20280 is an abundant number, because the sum of its proper divisors (45600) is greater than itself. Its abundance is 25320

Bases of 20280

• Binary: 100111100111000₂
• Hexadecimal: 0x4F38
• Base-36: FNC

Squares and roots of 20280

• 20280 squared (20280²) is 411278400
• 20280 cubed (20280³) is 8340725952000
• The square root of 20280 is 142.4078649513
• The cube root of 20280 is 27.2702624035

Scales and comparisons

• 20,280 seconds is equal to 5 hours, 38 minutes.
• To count from 1 to 20,280 would take you about five 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 20280 cubic inches would be around 2.3 feet tall.

Recreational maths with 20280

• 20280 backwards is 08202
• 20280 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 20280's digits is 12
• More coming soon!