90021

Names of 90021

• Cardinal: 90021 can be written as Ninety thousand and twenty-one.

Scientific notation

• Scientific notation: 9.0021 × 10⁴

Factors of 90021

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 851

Divisors of 90021

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 37 111 811 2433 30007 90021
• Sum of all divisors σ(n): 123424
• Sum of proper divisors (its aliquot sum) s(n): 33403
• 90021 is a deficient number, because the sum of its proper divisors (33403) is less than itself. Its deficiency is 56618

Bases of 90021

• Binary: 10101111110100101₂
• Hexadecimal: 0x15FA5
• Base-36: 1XGL

Squares and roots of 90021

• 90021 squared (90021²) is 8103780441
• 90021 cubed (90021³) is 729510419079261
• The square root of 90021 is 300.0349979587
• The cube root of 90021 is 44.8175327315

Scales and comparisons

• 90,021 seconds is equal to 1 day, 1 hour, 21 seconds.
• To count from 1 to 90,021 would take you about twenty-one seconds.

  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 90021 cubic inches would be around 3.7 feet tall.

Recreational maths with 90021

• 90021 backwards is 12009
• The number of decimal digits it has is: 5
• The sum of 90021's digits is 12
• More coming soon!