181990

Names of 181990

• Cardinal: 181990 can be written as One hundred eighty-one thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 1.8199 × 10⁵

Factors of 181990

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 18206

Divisors of 181990

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 5 10 18199 36398 90995 181990
• Sum of all divisors σ(n): 327600
• Sum of proper divisors (its aliquot sum) s(n): 145610
• 181990 is a deficient number, because the sum of its proper divisors (145610) is less than itself. Its deficiency is 36380

Bases of 181990

• Binary: 101100011011100110₂
• Hexadecimal: 0x2C6E6
• Base-36: 3WFA

Squares and roots of 181990

• 181990 squared (181990²) is 33120360100
• 181990 cubed (181990³) is 6027574334599000
• The square root of 181990 is 426.6028598123
• The cube root of 181990 is 56.6694731405

Scales and comparisons

• 181,990 seconds is equal to 2 days, 2 hours, 33 minutes, 10 seconds.
• To count from 1 to 181,990 would take you about two days.

  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 181990 cubic inches would be around 4.7 feet tall.

Recreational maths with 181990

• 181990 backwards is 099181
• The number of decimal digits it has is: 6
• The sum of 181990's digits is 28
• More coming soon!