# The number 192 doubled is 384

**Question description**

The number 192 doubled is 384 and tripled is 576. Notice that these three numbers, 192, 384, 576, contain all of the digits from 1 to 9 once each. Determine the only three-digit number ending in 7 with the same property, that is: the number itself, its double, and its triple contain all of the digits from 1 to 9 once each.

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