import math
def f(x):
    return x*(x+1)//2

def binary_search(l, r, n):
    while (l <= r):
        m = (l+r) // 2
        y = f(m)
        if y == n:
            return m
        elif y < n:
            l = m + 1
        else:
            r = m - 1
    return -1

n = int(input())
m = binary_search(1, 2*10**9, n)
if m >= 0:
    print("YES")
    print(m)
else:
    print("NO")