** Online travel agency Despegar.com Corp DESP.N shares rise 32.8% to $19.50 premarket
** Dutch tech investor Prosus PRX.AS to buy Despegar.com for $19.50/shr in cash, a 33% premium to last close
** Deal worth about $1.7 bln overall, including debt
** 4 of 6 brokerages rate DESP "buy"; median PT is $19 -LSEG data
** As of Friday, DESP has gained about 55% YTD
(Reporting by Abhinav Parmar in Bengaluru)
((Abhinav.Parmar@thomsonreuters.com;))