Answer:
406.
Step-by-step explanation:
continuously dividing the base 10 or decimal number by 8 till the decimal number does not becomes zero and the result is the remainders in reverse. 
Remainder on 262 / 8 = 6. 
Remainder on 32 / 8 = 0. 
Remainder on 4 / 8 = 4. 
Octal number=406.