import sys # sys.setrecursionlimit(200005) # sys.set_int_max_str_digits(200005) int1 = lambda x: int(x)-1 pDB = lambda *x: print(*x, end="\n", file=sys.stderr) p2D = lambda x: print(*x, sep="\n", end="\n\n", file=sys.stderr) def II(): return int(sys.stdin.readline()) def LI(): return list(map(int, sys.stdin.readline().split())) def LLI(rows_number): return [LI() for _ in range(rows_number)] def LI1(): return list(map(int1, sys.stdin.readline().split())) def LLI1(rows_number): return [LI1() for _ in range(rows_number)] def SI(): return sys.stdin.readline().rstrip() dij = [(0, 1), (-1, 0), (0, -1), (1, 0)] # dij = [(0, 1), (-1, 0), (0, -1), (1, 0), (1, 1), (1, -1), (-1, 1), (-1, -1)] inf = (1 << 63)-1 # md = 10**9+7 md = 998244353 def factors(a): if a<=0:return [0] dd0,dd1=[],[] for d in range(1,round(a**0.5)+1): if a%d:continue dd0.append(d) return dd0 n=II() ans=0 for a in factors(n): cur=1 b=n//a while a: if a&1 and b&1==0: cur=0 break if a&1 and b&1: cur*=2 a>>=1 b>>=1 ans+=cur print(ans//2)