87,360
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Number
$87 \, 360$ (eighty-seven thousand, three hundred and sixty) is:
- $2^6 \times 3 \times 5 \times 7 \times 13$
- The $4$th unitary perfect number after $6$, $60$, $90$:
- $87 \, 360 = \paren {2^6 + 1} \paren {3 + 1} \paren {5 + 1} \paren {7 + 1} \paren {14 + 1} - 87 \, 360$
Also see
Sources
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $87,360$