21420714

Names of 21420714

• Cardinal: 21420714 can be written as Twenty-one million, four hundred twenty thousand, seven hundred fourteen.

Scientific notation

• Scientific notation: 2.1420714 × 10⁷

Factors of 21420714

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 1627

Divisors of 21420714

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 6 7 14 17 19 21 34 38 42 51 57 102 114 119 133 238 266 323 357 399 646 714 798 969 1579 1938 2261 3158 4522 4737 6783 9474 11053 13566 22106 26843 30001 33159 53686 60002 66318 80529 90003 161058 180006 187901 210007 375802 420014 510017 563703 630021 1020034 1127406 1260042 1530051 3060102 3570119 7140238 10710357 21420714
• Sum of all divisors σ(n): 54604800
• Sum of proper divisors (its aliquot sum) s(n): 33184086
• 21420714 is an abundant number, because the sum of its proper divisors (33184086) is greater than itself. Its abundance is 11763372

Bases of 21420714

• Binary: 1010001101101101010101010₂
• Hexadecimal: 0x146DAAA
• Base-36: CR4BU

Squares and roots of 21420714

• 21420714 squared (21420714²) is 458846988269796
• 21420714 cubed (21420714³) is 9828830105488654954344
• The square root of 21420714 is 4628.2517217627
• The cube root of 21420714 is 277.7226587287

Scales and comparisons

• 21,420,714 seconds is equal to 35 weeks, 2 days, 22 hours, 11 minutes, 54 seconds.
• To count from 1 to 21,420,714 would take you about twenty-one 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 21420714 cubic inches would be around 23.1 feet tall.

Recreational maths with 21420714

• 21420714 backwards is 41702412
• 21420714 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21420714's digits is 21
• More coming soon!