use std::io::*;
const EPS: f64 = 1e-10;

fn main() {
    let mut s: String = String::new();
    std::io::stdin().read_to_string(&mut s).ok();
    let mut itr = s.trim().split_whitespace();
    let m: u64 = itr.next().unwrap().parse().unwrap();
    let n = m as f64;
    // x ^ 2 + x - n * 2 == 0
    // x = (sqrt(8 * n + 1) - 1) / 2
    let ans = ((n * 8.0 + 1.0).sqrt() - 1.0) / 2.0;
    if ans.fract() < EPS {
        if (ans.trunc() * (ans.trunc() + 1.0) / 2.0) as u64 == m {
            println!("YES");
            println!("{}", ans.trunc());
        } else {
            println!("NO");
        }
    } else {
        println!("NO");
    }
}