21854

Names of 21854

• Cardinal: 21854 can be written as Twenty-one thousand, eight hundred fifty-four.

Scientific notation

• Scientific notation: 2.1854 × 10⁴

Factors of 21854

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 232

Divisors of 21854

• Number of divisors d(n): 12
• Complete list of divisors:
  1 2 7 14 49 98 223 446 1561 3122 10927 21854
• Sum of all divisors σ(n): 38304
• Sum of proper divisors (its aliquot sum) s(n): 16450
• 21854 is a deficient number, because the sum of its proper divisors (16450) is less than itself. Its deficiency is 5404

Bases of 21854

• Binary: 101010101011110₂
• Hexadecimal: 0x555E
• Base-36: GV2

Squares and roots of 21854

• 21854 squared (21854²) is 477597316
• 21854 cubed (21854³) is 10437411743864
• The square root of 21854 is 147.8309845735
• The cube root of 21854 is 27.9582711751

Scales and comparisons

• 21,854 seconds is equal to 6 hours, 4 minutes, 14 seconds.
• To count from 1 to 21,854 would take you about six 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 21854 cubic inches would be around 2.3 feet tall.

Recreational maths with 21854

• 21854 backwards is 45812
• The number of decimal digits it has is: 5
• The sum of 21854's digits is 20
• More coming soon!