Binary value of 20 decimal number

Result

20 = 10100

Explained

• 20 / 2 = 10
  0 remainder of division
• 10 / 2 = 5
  0 remainder of division
• 5 / 2 = 2.5
  1 remainder of division
• 2 / 2 = 1
  0 remainder of division
• 1 / 2 = 0.5
  1 remainder of division

Read listed remainders in reverse:

20 = 10100