def binary_search(target):
    left, right = 1, 2*10**9
    
    while left <= right:
        mid = (left + right) // 2
        guess = mid * (mid + 1) // 2
        
        if guess == target:
            return mid
        elif guess < target:
            left = mid + 1
        else:
            right = mid - 1
    
    return -1

N = int(input())
ans = binary_search(N)

if ans == -1:
    print('NO')
else:
    print('YES')
    print(ans)