387

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Number

$387$ (three hundred and eighty-seven) is:

$3^2 \times 43$

The $22$nd inconsummate number after $62$, $63$, $65$, $75$, $\ldots$, $371$, $372$, $377$, $381$, $383$, $386$:

$\nexists n \in \Z_{>0}: n = 387 \map {\times s_{10} } n$

The $1$st of the $11$th pair of consecutive integers which both have $6$ divisors:

$\map {\sigma_0} {387} = \map {\sigma_0} {388} = 6$

Also see

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