21072889

Names of 21072889

• Cardinal: 21072889 can be written as Twenty-one million, seventy-two thousand, eight hundred eighty-nine.

Scientific notation

• Scientific notation: 2.1072889 × 10⁷

Factors of 21072889

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 21072889

Divisors of 21072889

• Number of divisors d(n): 2
• Complete list of divisors:
  1 21072889
• Sum of all divisors σ(n): 21072890
• Sum of proper divisors (its aliquot sum) s(n): 1
• 21072889 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 21072888

Bases of 21072889

• Binary: 1010000011000101111111001₂
• Hexadecimal: 0x1418BF9
• Base-36: CJNY1

Squares and roots of 21072889

• 21072889 squared (21072889²) is 444066650806321
• 21072889 cubed (21072889³) is 9357767241043362931369
• The square root of 21072889 is 4590.5216479175
• The cube root of 21072889 is 276.2112478145

Scales and comparisons

• 21,072,889 seconds is equal to 34 weeks, 5 days, 21 hours, 34 minutes, 49 seconds.
• To count from 1 to 21,072,889 would take you about twenty 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 21072889 cubic inches would be around 23 feet tall.

Recreational maths with 21072889

• 21072889 backwards is 98827012
• The number of decimal digits it has is: 8
• The sum of 21072889's digits is 37
• More coming soon!