21024

Names of 21024

• Cardinal: 21024 can be written as Twenty-one thousand and twenty-four.

Scientific notation

• Scientific notation: 2.1024 × 10⁴

Factors of 21024

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 78

Divisors of 21024

• Number of divisors d(n): 36
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 32 36 48 72 73 96 144 146 219 288 292 438 584 657 876 1168 1314 1752 2336 2628 3504 5256 7008 10512 21024
• Sum of all divisors σ(n): 60606
• Sum of proper divisors (its aliquot sum) s(n): 39582
• 21024 is an abundant number, because the sum of its proper divisors (39582) is greater than itself. Its abundance is 18558

Bases of 21024

• Binary: 101001000100000₂
• Hexadecimal: 0x5220
• Base-36: G80

Squares and roots of 21024

• 21024 squared (21024²) is 442008576
• 21024 cubed (21024³) is 9292788301824
• The square root of 21024 is 144.9965516831
• The cube root of 21024 is 27.5997479499

Scales and comparisons

• 21,024 seconds is equal to 5 hours, 50 minutes, 24 seconds.
• To count from 1 to 21,024 would take you about five 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 21024 cubic inches would be around 2.3 feet tall.

Recreational maths with 21024

• 21024 backwards is 42012
• 21024 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 21024's digits is 9
• More coming soon!