Yes, 824000.org can receive emails.
Yes, 824000.org seems to be a legitimate domain.
A record
213.186.33.16
MX records
ALT1.ASPMX.L.GOOGLE.COM
64.233.186.27
ALT2.ASPMX.L.GOOGLE.COM
209.85.202.27
ALT3.ASPMX.L.GOOGLE.COM
64.233.184.26
ALT4.ASPMX.L.GOOGLE.COM
142.250.153.26
ASPMX.L.GOOGLE.COM
173.194.208.26