21342478

Names of 21342478

• Cardinal: 21342478 can be written as Twenty-one million, three hundred forty-two thousand, four hundred seventy-eight.

Scientific notation

• Scientific notation: 2.1342478 × 10⁷

Factors of 21342478

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 44522

Divisors of 21342478

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 241 482 44279 88558 10671239 21342478
• Sum of all divisors σ(n): 32147280
• Sum of proper divisors (its aliquot sum) s(n): 10804802
• 21342478 is a deficient number, because the sum of its proper divisors (10804802) is less than itself. Its deficiency is 10537676

Bases of 21342478

• Binary: 1010001011010100100001110₂
• Hexadecimal: 0x145A90E
• Base-36: CPFYM

Squares and roots of 21342478

• 21342478 squared (21342478²) is 455501367180484
• 21342478 cubed (21342478³) is 9721527908019401799352
• The square root of 21342478 is 4619.7919866591
• The cube root of 21342478 is 277.3841325651

Scales and comparisons

• 21,342,478 seconds is equal to 35 weeks, 2 days, 27 minutes, 58 seconds.
• To count from 1 to 21,342,478 would take you about six 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 21342478 cubic inches would be around 23.1 feet tall.

Recreational maths with 21342478

• 21342478 backwards is 87424312
• The number of decimal digits it has is: 8
• The sum of 21342478's digits is 31
• More coming soon!