8192

Number
$8192$ (eight thousand, one hundred and ninety-two) is:


 * $2^{13}$


 * The $13$th power of $2$ after $(1)$, $2$, $4$, $8$, $16$, $32$, $64$, $128$, $256$, $512$, $1024$, $2048$, $4096$:
 * $8192 = 2^{13}$


 * The $14$th almost perfect number after $1$, $2$, $4$, $8$, $16$, $32$, $64$, $128$, $256$, $512$, $1024$, $2048$, $4096$:
 * $\map {\sigma_1} {8192} = 16 \, 383 = 2 \times 8192 - 1$