72421

Names of 72421

• Cardinal: 72421 can be written as Seventy-two thousand, four hundred twenty-one.

Scientific notation

• Scientific notation: 7.2421 × 10⁴

Factors of 72421

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 72421

Divisors of 72421

• Number of divisors d(n): 2
• Complete list of divisors:
  1 72421
• Sum of all divisors σ(n): 72422
• Sum of proper divisors (its aliquot sum) s(n): 1
• 72421 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 72420

Bases of 72421

• Binary: 10001101011100101₂
• Hexadecimal: 0x11AE5
• Base-36: 1JVP

Squares and roots of 72421

• 72421 squared (72421²) is 5244801241
• 72421 cubed (72421³) is 379833750674461
• The square root of 72421 is 269.1115010547
• The cube root of 72421 is 41.6826036811

Scales and comparisons

• 72,421 seconds is equal to 20 hours, 7 minutes, 1 second.
• To count from 1 to 72,421 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 72421 cubic inches would be around 3.5 feet tall.

Recreational maths with 72421

• 72421 backwards is 12427
• The number of decimal digits it has is: 5
• The sum of 72421's digits is 16
• More coming soon!