30021

Names of 30021

• Cardinal: 30021 can be written as Thirty thousand and twenty-one.

Scientific notation

• Scientific notation: 3.0021 × 10⁴

Factors of 30021

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 10010

Divisors of 30021

• Number of divisors d(n): 4
• Complete list of divisors:
  1 3 10007 30021
• Sum of all divisors σ(n): 40032
• Sum of proper divisors (its aliquot sum) s(n): 10011
• 30021 is a deficient number, because the sum of its proper divisors (10011) is less than itself. Its deficiency is 20010

Bases of 30021

• Binary: 111010101000101₂
• Hexadecimal: 0x7545
• Base-36: N5X

Squares and roots of 30021

• 30021 squared (30021²) is 901260441
• 30021 cubed (30021³) is 27056739699261
• The square root of 30021 is 173.2656919301
• The cube root of 30021 is 31.0795735777

Scales and comparisons

• 30,021 seconds is equal to 8 hours, 20 minutes, 21 seconds.
• To count from 1 to 30,021 would take you about eight 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 30021 cubic inches would be around 2.6 feet tall.

Recreational maths with 30021

• 30021 backwards is 12003
• The number of decimal digits it has is: 5
• The sum of 30021's digits is 6
• More coming soon!