Well, there are 31472628.9 kb's in one megabyte. This means that in 20 mb's, there are 629452578 kb.
21*1000 or 21*1024 (= 21504) depending on how you measure kB (the second is more common)
I believe 21 or so.
1126.4 mb * 1024 kb/mb = 1,153,433.6 kb
How many Kb is 3.20 mb? is Gb
1024 KB is in 1 MB.
32 MB is 32,768 KB
10.3 MB is 10,547.2 KB
5,120 mb = 5,120,000 kb
1024 KB = 1 MB
1.1 MB is 1,126.4 KB
728 KB is about 0.711 MB
1.44 MB is 1,474.56 KB
1024 KB = 1 MB