The D3500 retains exactly the same successful 24.2MP pixel depend as the aged D3400, but this can be a more recent sensor, and nearer inspection in the specs shows that the full count on the D3500's sensor stands at 24.78MP, in comparison with 24.72MP around the D3400.  You'll want to https://www.youtube.com/watch?v=iiKPXhSWK3c