I'm working in a report and I can't make the references work the way I want to. My main problem is that, in the references section, the number in square brackets at the beginning of the reference doesn't show up. I've already looked up over the Internet for possible solutions, but none of them worked. I would be very grateful if someone could help me out. Following, it's the part of my code I consider relevant:
\documentclass[12pt,a4paper]{article}
\usepackage[utf8]{inputenc}
\usepackage[spanish]{babel}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{imakeidx}
\usepackage{graphicx}
\usepackage{apacite}
\usepackage{xcolor}
\usepackage[sort, numbers]{natbib}
\usepackage{hyperref} % Hyperlinks bib references.
\begin{document}
(...)
...esfera del hardware \cite{ocp} \cite{ocp2} \cite{ocp3}.
\bibliographystyle{unsrtnat}
\bibliography{referencias}
\end{document}
And here is my .bib file
@misc{ocp,
number = {1},
author = {OPC},
title = {About Open Compute Project},
url = {https://www.opencompute.org/about},
year = {2018},
note = {Último acceso: 03-11-2018}
}
@misc{ocp2,
number = {2},
author = {OPC2},
title = {About Open Compute Project 2},
url = {https://www.opencompute.org/about},
year = {2018},
note = {Último acceso: 03-11-2018}
}
@misc{ocp3,
number = {3},
author = {OPC3},
title = {About Open Compute Project 3},
url = {https://www.opencompute.org/about},
year = {2018},
note = {Último acceso: 03-11-2018}
}
As you can see there is no number between square brackets in the references. That's what I'd like to fix. Thank you.

natbib. – egreg Nov 03 '18 at 23:04apaciteis the culprit, of course. – egreg Nov 04 '18 at 22:48