21127231

Names of 21127231

• Cardinal: 21127231 can be written as Twenty-one million, one hundred twenty-seven thousand, two hundred thirty-one.

Scientific notation

• Scientific notation: 2.1127231 × 10⁷

Factors of 21127231

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 398680

Divisors of 21127231

• Number of divisors d(n): 4
• Complete list of divisors:
  1 53 398627 21127231
• Sum of all divisors σ(n): 21525912
• Sum of proper divisors (its aliquot sum) s(n): 398681
• 21127231 is a deficient number, because the sum of its proper divisors (398681) is less than itself. Its deficiency is 20728550

Bases of 21127231

• Binary: 1010000100110000000111111₂
• Hexadecimal: 0x142603F
• Base-36: CKTVJ

Squares and roots of 21127231

• 21127231 squared (21127231²) is 446359889727361
• 21127231 cubed (21127231³) is 9430348499404482867391
• The square root of 21127231 is 4596.4367721095
• The cube root of 21127231 is 276.4484718575

Scales and comparisons

• 21,127,231 seconds is equal to 34 weeks, 6 days, 12 hours, 40 minutes, 31 seconds.
• To count from 1 to 21,127,231 would take you about two days!

  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 21127231 cubic inches would be around 23 feet tall.

Recreational maths with 21127231

• 21127231 backwards is 13272112
• The number of decimal digits it has is: 8
• The sum of 21127231's digits is 19
• More coming soon!