18816

Names of 18816

• Cardinal: 18816 can be written as Eighteen thousand, eight hundred sixteen.

Scientific notation

• Scientific notation: 1.8816 × 10⁴

Factors of 18816

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 12

Divisors of 18816

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 49 56 64 84 96 98 112 128 147 168 192 196 224 294 336 384 392 448 588 672 784 896 1176 1344 1568 2352 2688 3136 4704 6272 9408 18816
• Sum of all divisors σ(n): 58140
• Sum of proper divisors (its aliquot sum) s(n): 39324
• 18816 is an abundant number, because the sum of its proper divisors (39324) is greater than itself. Its abundance is 20508

Bases of 18816

• Binary: 100100110000000₂
• Hexadecimal: 0x4980
• Base-36: EIO

Squares and roots of 18816

• 18816 squared (18816²) is 354041856
• 18816 cubed (18816³) is 6661651562496
• The square root of 18816 is 137.1714255957
• The cube root of 18816 is 26.5975990449

Scales and comparisons

• 18,816 seconds is equal to 5 hours, 13 minutes, 36 seconds.
• To count from 1 to 18,816 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 18816 cubic inches would be around 2.2 feet tall.

Recreational maths with 18816

• 18816 backwards is 61881
• 18816 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 18816's digits is 24
• More coming soon!