1,622. One to tell the original joke, and the rest to submit give some minor variation of it! For example:
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To see how long he slept.
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Two. One to take out the bulb and drop it, and the other to try and sell it before it crashes.
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None, because people who glow in the dark don't need light bulbs.
Note: Topical to the Chernobyl Reactor disaster of 1984.
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Only one, but they get three tech. reports out of it.
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