18268981

Names of 18268981

• Cardinal: 18268981 can be written as Eighteen million, two hundred sixty-eight thousand, nine hundred eighty-one.

Scientific notation

• Scientific notation: 1.8268981 × 10⁷

Factors of 18268981

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 1031

Divisors of 18268981

• Number of divisors d(n): 8
• Complete list of divisors:
  1 101 277 653 27977 65953 180881 18268981
• Sum of all divisors σ(n): 18544824
• Sum of proper divisors (its aliquot sum) s(n): 275843
• 18268981 is a deficient number, because the sum of its proper divisors (275843) is less than itself. Its deficiency is 17993138

Bases of 18268981

• Binary: 1000101101100001100110101₂
• Hexadecimal: 0x116C335
• Base-36: AVKFP

Squares and roots of 18268981

• 18268981 squared (18268981²) is 333755666778361
• 18268981 cubed (18268981³) is 6097375935016208320141
• The square root of 18268981 is 4274.2228533385
• The cube root of 18268981 is 263.3731156403

Scales and comparisons

• 18,268,981 seconds is equal to 30 weeks, 1 day, 10 hours, 43 minutes, 1 second.
• To count from 1 to 18,268,981 would take you about forty-five 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 18268981 cubic inches would be around 21.9 feet tall.

Recreational maths with 18268981

• 18268981 backwards is 18986281
• The number of decimal digits it has is: 8
• The sum of 18268981's digits is 43
• More coming soon!