10405

Names of 10405

• Cardinal: 10405 can be written as Ten thousand, four hundred five.

Scientific notation

• Scientific notation: 1.0405 × 10⁴

Factors of 10405

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 2086

Divisors of 10405

• Number of divisors d(n): 4
• Complete list of divisors:
  1 5 2081 10405
• Sum of all divisors σ(n): 12492
• Sum of proper divisors (its aliquot sum) s(n): 2087
• 10405 is a deficient number, because the sum of its proper divisors (2087) is less than itself. Its deficiency is 8318

Bases of 10405

• Binary: 10100010100101₂
• Hexadecimal: 0x28A5
• Base-36: 811

Squares and roots of 10405

• 10405 squared (10405²) is 108264025
• 10405 cubed (10405³) is 1126487180125
• The square root of 10405 is 102.0049018430
• The cube root of 10405 is 21.8313551549

Scales and comparisons

• 10,405 seconds is equal to 2 hours, 53 minutes, 25 seconds.
• To count from 1 to 10,405 would take you about two 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 10405 cubic inches would be around 1.8 feet tall.

Recreational maths with 10405

• 10405 backwards is 50401
• The number of decimal digits it has is: 5
• The sum of 10405's digits is 10
• More coming soon!