7272

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Number

$7272$ (seven thousand, two hundred and seventy-two) is:

$2^3 \times 3^2 \times 101$

The $15$th Kaprekar number after $1$, $9$, $45$, $55$, $99$, $297$, $703$, $999$, $2223$, $2728$, $4879$, $4950$, $5050$, $5292$:

$7272^2 = 52 \, 881 \, 984 \to 5288 + 1984 = 7272$

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