18021007

Names of 18021007

• Cardinal: 18021007 can be written as Eighteen million, twenty-one thousand and seven.

Scientific notation

• Scientific notation: 1.8021007 × 10⁷

Factors of 18021007

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 4913

Divisors of 18021007

• Number of divisors d(n): 8
• Complete list of divisors:
  1 53 71 3763 4789 253817 340019 18021007
• Sum of all divisors σ(n): 18623520
• Sum of proper divisors (its aliquot sum) s(n): 602513
• 18021007 is a deficient number, because the sum of its proper divisors (602513) is less than itself. Its deficiency is 17418494

Bases of 18021007

• Binary: 1000100101111101010001111₂
• Hexadecimal: 0x112FA8F
• Base-36: AQ93J

Squares and roots of 18021007

• 18021007 squared (18021007²) is 324756693294049
• 18021007 cubed (18021007³) is 5852442643148910087343
• The square root of 18021007 is 4245.1156639131
• The cube root of 18021007 is 262.1760514791

Scales and comparisons

• 18,021,007 seconds is equal to 29 weeks, 5 days, 13 hours, 50 minutes, 7 seconds.
• To count from 1 to 18,021,007 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 18021007 cubic inches would be around 21.8 feet tall.

Recreational maths with 18021007

• 18021007 backwards is 70012081
• The number of decimal digits it has is: 8
• The sum of 18021007's digits is 19
• More coming soon!