# -*- coding: utf-8 -*-
"""
No.648 　お　や　す　み　
https://yukicoder.me/problems/no/648

"""
import sys
from sys import stdin
input = stdin.readline


def main(args):
    n = int(input())

    lb = 0
    ub = 2 * 10**18

    found = -1
    while lb +1 < ub:
        mid = (lb + ub) // 2
        total = (1 + mid) * mid // 2
        if total == n:
            found = mid
            break
        elif total > n:
            ub = mid
        else:
            lb = mid

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


if __name__ == '__main__':
    main(sys.argv[1:])