from math import floor, sqrt


def main():
    n = int(input())
    i_small = floor(sqrt(n))

    if i_small * (i_small+1) == 2 * n:
        print("YES")
        print(i_small)
        return

    if (i_small+2) * (i_small+1) == 2 * n:
        print("YES")
        print(i_small+1)
        return

    if (i_small+3) * (i_small+2) == 2 * n:
        print("YES")
        print(i_small+2)
        return

    print("NO")


if __name__ == "__main__":
    main()