# import sys; input = sys.stdin.buffer.readline
# sys.setrecursionlimit(10**7)
from collections import defaultdict
con = 998244353; INF = float("inf")

def getlist():
	return list(map(int, input().split()))

#二分探索基本形 L:リスト x:値 n:リスト長
def Binary_Search(N):
	#初期化
	left = 0
	right = 2 * (10 ** 18)
	
	#二分探索
	while left <= right:
		mid = (left + right) // 2
		val = (mid + 1) * mid // 2
		if val == N:
			return mid
		elif val > N:
			right = mid - 1
		else:
			left = mid + 1

	return INF


#処理内容
def main():
	N = int(input())
	ans = Binary_Search(N)
	if ans == INF:
		print("NO")
	else:
		print("YES")
		print(ans)


if __name__ == '__main__':
	main()