import sequtils,strutils,algorithm,math


var
    N = stdin.readline.parseInt
    a = newSeq[int](0)
    i = 1
while i ^ 2 <= N:
    if N mod i == 0:
        a.add(i)
        if i * i != N:
            a.add(N div i)
    i += 1

if sum(a) == 2 * N:
    echo("Yes")
else:
    echo("No")