21248

Names of 21248

• Cardinal: 21248 can be written as Twenty-one thousand, two hundred forty-eight.

Scientific notation

• Scientific notation: 2.1248 × 10⁴

Factors of 21248

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 85

Divisors of 21248

• Number of divisors d(n): 18
• Complete list of divisors:
  1 2 4 8 16 32 64 83 128 166 256 332 664 1328 2656 5312 10624 21248
• Sum of all divisors σ(n): 42924
• Sum of proper divisors (its aliquot sum) s(n): 21676
• 21248 is an abundant number, because the sum of its proper divisors (21676) is greater than itself. Its abundance is 428

Bases of 21248

• Binary: 101001100000000₂
• Hexadecimal: 0x5300
• Base-36: GE8

Squares and roots of 21248

• 21248 squared (21248²) is 451477504
• 21248 cubed (21248³) is 9592994004992
• The square root of 21248 is 145.7669372663
• The cube root of 21248 is 27.6974222907

Scales and comparisons

• 21,248 seconds is equal to 5 hours, 54 minutes, 8 seconds.
• To count from 1 to 21,248 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 21248 cubic inches would be around 2.3 feet tall.

Recreational maths with 21248

• 21248 backwards is 84212
• The number of decimal digits it has is: 5
• The sum of 21248's digits is 17
• More coming soon!