20402

Names of 20402

• Cardinal: 20402 can be written as Twenty thousand, four hundred two.

Scientific notation

• Scientific notation: 2.0402 × 10⁴

Factors of 20402

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 103

Divisors of 20402

• Number of divisors d(n): 6
• Complete list of divisors:
  1 2 101 202 10201 20402
• Sum of all divisors σ(n): 30909
• Sum of proper divisors (its aliquot sum) s(n): 10507
• 20402 is a deficient number, because the sum of its proper divisors (10507) is less than itself. Its deficiency is 9895

Bases of 20402

• Binary: 100111110110010₂
• Hexadecimal: 0x4FB2
• Base-36: FQQ

Squares and roots of 20402

• 20402 squared (20402²) is 416241604
• 20402 cubed (20402³) is 8492161204808
• The square root of 20402 is 142.8355697997
• The cube root of 20402 is 27.3248370711

Scales and comparisons

• 20,402 seconds is equal to 5 hours, 40 minutes, 2 seconds.
• To count from 1 to 20,402 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 20402 cubic inches would be around 2.3 feet tall.

Recreational maths with 20402

• 20402 is the same when its digits are reversed! That makes it a palindromic number.
• The number of decimal digits it has is: 5
• The sum of 20402's digits is 8
• More coming soon!