Question 18
The four-digit number 1120 is divisible by the sum of its digits, $1+1+2+0=4$. What is the greatest four-digit number divisible by the sum of its digits?
Answer format: enter one whole number without units. The source answer sheet uses four digits with leading zeros if needed; ordinary numeric entry is used here.
Answer format: enter one whole number without units. The source answer sheet uses four digits with leading zeros if needed; ordinary numeric entry is used here.