**A triangular array of 2016 coins has 1 coin in the first row, 2 coins in the second row, 3 coins in the third row and so on up to N coins in the Nth row. What is the sum of the digits of N?**

**Answer:**

**A triangular array of 2016 coins has 1 coin in the first row, 2 coins in the second row, 3 coins in the third row and so on up to N coins in the Nth row. What is the sum of the digits of N?**

**Answer:**