Shell Programming and Scripting

Somebody can please give a highlight on this. The problem shows only on Linux(Redhat) not any other unix flavors

Linux :
$unset m
$m=`find . -newer rman_padev_20051206195000.out -name "*L0.rman" -exec ls -l {} \; | awk '{ s+=$5 } END{printf("%.0f", s)}'`
$echo $m
7425089536
$typeset -i i
$((i=$m*1)); echo $i
-1164845056

$unset m
$typeset -i m
$m=`find . -newer rman_padev_20051206195000.out -name "*L0.rman" -exec ls -l {} \; | awk '{ s+=$5 } END{printf("%.0f", s)}'`
$echo $m
-1164845056

I tried to use '%d' or '%i' in awk print format. But that return scientific (exponential) output in linux ksh.