His bounty could be higher if Oda still remember about Sanji's words with Kuma so I'll keep that under cover for now.
Well, let's see:
Cross Guild bounties:
Mihawk --> Mi(3) Ho(Go=5) Ku(9) --> 3590
Buggy --> Ba(Ha=8)Gi(Gu=9) --> 3189
Crocodile --> Ku(9)Ro(6)Ko(Go=5) --> 1965
Then Zoro's and Sanji's current bounties were based on their birthdays. And the list goes on.