Base 10: 167_903_488
Octal: 0___1200400400
Hex: 0x__a_02_01_00
IP: 10.2.1.0
Binary: 0b__00001010_00000010_00000001_00000000
Mask: 255.255.254.0
= 0b__11111111_11111111_11111110_00000000
Subnet: 10.2.0.0
= 0b__00001010_00000010_00000000_00000000
The number of addresses is 2**(32-23) = 512
which go from 10.2.0.0 up to 10.2.1.255 .
(The lowest is the network address,
and the highest is the broadcast address.)