21436942

Names of 21436942

• Cardinal: 21436942 can be written as Twenty-one million, four hundred thirty-six thousand, nine hundred forty-two.

Scientific notation

• Scientific notation: 2.1436942 × 10⁷

Factors of 21436942

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 181730

Divisors of 21436942

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 59 118 181669 363338 10718471 21436942
• Sum of all divisors σ(n): 32700600
• Sum of proper divisors (its aliquot sum) s(n): 11263658
• 21436942 is a deficient number, because the sum of its proper divisors (11263658) is less than itself. Its deficiency is 10173284

Bases of 21436942

• Binary: 1010001110001101000001110₂
• Hexadecimal: 0x1471A0E
• Base-36: CRGUM

Squares and roots of 21436942

• 21436942 squared (21436942²) is 459542482311364
• 21436942 cubed (21436942³) is 9851185539844736008888
• The square root of 21436942 is 4630.0045356349
• The cube root of 21436942 is 277.7927738155

Scales and comparisons

• 21,436,942 seconds is equal to 35 weeks, 3 days, 2 hours, 42 minutes, 22 seconds.
• To count from 1 to 21,436,942 would take you about four 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 21436942 cubic inches would be around 23.1 feet tall.

Recreational maths with 21436942

• 21436942 backwards is 24963412
• The number of decimal digits it has is: 8
• The sum of 21436942's digits is 31
• More coming soon!