import math
n = float(input())
t = (1 + math.sqrt(1 + 8 * n)) / 2
case_1 = int(t) - 1
case_2 = int(t)
case_3 = int(t) + 1
if case_1 * (case_1 + 1) == 2 * n:
    print("YES")
    print(case_1)
elif case_2 * (case_2 + 1) == 2 * n:
    print("YES")
    print(case_2)
elif case_3 * (case_3 + 1) == 2 * n:
    print("YES")
    print(case_3)
else:
    print("NO")