30,240

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Number

$30 \, 240$ (thirty thousand, two hundred and forty) is:

$2^5 \times 3^3 \times 5 \times 7$


The $1$st quadruply perfect number:
$\map {\sigma_1} {30 \, 240} = 120 \, 960 = 4 \times 30 \, 240$


Arithmetic Functions on $30 \, 240$

\(\ds \map {\sigma_1} { 30 \, 240 }\) \(=\) \(\ds 120 \, 960\) $\sigma_1$ of $30 \, 240$


Also see

  • Next: Quadruply Perfect Number


Sources

  • 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $30,240$
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