72221

Names of 72221

• Cardinal: 72221 can be written as Seventy-two thousand, two hundred twenty-one.

Scientific notation

• Scientific notation: 7.2221 × 10⁴

Factors of 72221

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 72221

Divisors of 72221

• Number of divisors d(n): 2
• Complete list of divisors:
  1 72221
• Sum of all divisors σ(n): 72222
• Sum of proper divisors (its aliquot sum) s(n): 1
• 72221 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 72220

Bases of 72221

• Binary: 10001101000011101₂
• Hexadecimal: 0x11A1D
• Base-36: 1JQ5

Squares and roots of 72221

• 72221 squared (72221²) is 5215872841
• 72221 cubed (72221³) is 376695552449861
• The square root of 72221 is 268.7396509635
• The cube root of 72221 is 41.6441976635

Scales and comparisons

• 72,221 seconds is equal to 20 hours, 3 minutes, 41 seconds.
• To count from 1 to 72,221 would take you about twenty 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 72221 cubic inches would be around 3.5 feet tall.

Recreational maths with 72221

• 72221 backwards is 12227
• 72221 is a twin prime! Its twin is 72223
• The number of decimal digits it has is: 5
• The sum of 72221's digits is 14
• More coming soon!