60

Number
$60$ (Sixty) is:


 * $2^2 \times 3 \times 5$


 * The $9$th superabundant number after $1, 2, 4, 6, 12, 24, 36, 48$:
 * $\dfrac {\sigma \left({60}\right)} {60} = \dfrac {168} {60} = 2 \cdotp 8$


 * The $14$th semiperfect number after $6, 12, 18, 20, 24, 28, 30, 36, 40, 42, 48, 54, 56$:
 * $60 = 10 + 20 + 30$