18121

Names of 18121

• Cardinal: 18121 can be written as Eighteen thousand, one hundred twenty-one.

Scientific notation

• Scientific notation: 1.8121 × 10⁴

Factors of 18121

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 18121

Divisors of 18121

• Number of divisors d(n): 2
• Complete list of divisors:
  1 18121
• Sum of all divisors σ(n): 18122
• Sum of proper divisors (its aliquot sum) s(n): 1
• 18121 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 18120

Bases of 18121

• Binary: 100011011001001₂
• Hexadecimal: 0x46C9
• Base-36: DZD

Squares and roots of 18121

• 18121 squared (18121²) is 328370641
• 18121 cubed (18121³) is 5950404385561
• The square root of 18121 is 134.6142637315
• The cube root of 18121 is 26.2660068661

Scales and comparisons

• 18,121 seconds is equal to 5 hours, 2 minutes, 1 second.
• To count from 1 to 18,121 would take you about five 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 18121 cubic inches would be around 2.2 feet tall.

Recreational maths with 18121

• 18121 backwards is 12181
• The number of decimal digits it has is: 5
• The sum of 18121's digits is 13
• More coming soon!