List of rpms with size & name in order

rpm -q -a --qf '%10{SIZE}\t%{NAME}\n' | sort -k1,1n


To view rpm file contents
rpm -qlp file-package.name.rpm


To get info about rpm package itself
rpm -qip file-package.name.rpm


To extract or open rpm file in current directory:
rpm2cpio file.rpm | cpio -idmv