def divisor(n):
  cd = []
  i = 1
  while i*i <= n:
    if n%i==0:
      cd.append(i)
      if i != n//i:
        cd.append(n//i)
    i += 1
  return cd

A = int(input())
for x in divisor(2*A):
  if x<3:
    continue
  y = 2*A//x
  if (y+1-x)%2==0:
    print('YES')
    break
else:
  print('NO')