18021697

Names of 18021697

• Cardinal: 18021697 can be written as Eighteen million, twenty-one thousand, six hundred ninety-seven.

Scientific notation

• Scientific notation: 1.8021697 × 10⁷

Factors of 18021697

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 13438

Divisors of 18021697

• Number of divisors d(n): 4
• Complete list of divisors:
  1 1511 11927 18021697
• Sum of all divisors σ(n): 18035136
• Sum of proper divisors (its aliquot sum) s(n): 13439
• 18021697 is a deficient number, because the sum of its proper divisors (13439) is less than itself. Its deficiency is 18008258

Bases of 18021697

• Binary: 1000100101111110101000001₂
• Hexadecimal: 0x112FD41
• Base-36: AQ9MP

Squares and roots of 18021697

• 18021697 squared (18021697²) is 324781562759809
• 18021697 cubed (18021697³) is 5853114915243761575873
• The square root of 18021697 is 4245.1969330055
• The cube root of 18021697 is 262.1793975583

Scales and comparisons

• 18,021,697 seconds is equal to 29 weeks, 5 days, 14 hours, 1 minute, 37 seconds.
• To count from 1 to 18,021,697 would take you about forty-four weeks!

  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 18021697 cubic inches would be around 21.8 feet tall.

Recreational maths with 18021697

• 18021697 backwards is 79612081
• The number of decimal digits it has is: 8
• The sum of 18021697's digits is 34
• More coming soon!