500000 = 500,000 or five hundred thousand.
It's already a numeric number
0.5 million = 0.5 x 1 million = 0.5 x 1000000 = 500000
4020096 IS in numeric form.
8 in numeric numbers is VIII.
LXXV
Nineteen.
XCIV
(VIII)
MMMMMMMMMMMMMD
8,400
(XXII)
1,500,000