2,097,152

Number
$2 \, 097 \, 152$ (two million, ninety-seven thousand, one hundred and fifty-two) is:
 * $2^{21}$


 * The $128$th cube number:
 * $2 \, 097 \, 152 = 128 \times 128 \times 128$


 * The $8$th $7$th power after after $1$, $128$, $2187$, $16 \, 384$, $78 \, 125$, $279 \, 936$, $823 \, 543$:
 * $2 \, 097 \, 152 = 8 \times 8 \times 8 \times 8 \times 8 \times 8 \times 8$


 * The $7$th power of $8$ after $(1)$, $8$, $64$, $512$, $4096$, $32 \, 768$, $262 \, 144$:
 * $2 \, 097 \, 152 = 8^7$


 * The $21$st power of $2$ after $(1)$, $2$, $4$, $8$, $16$, $\ldots$, $65 \, 536$, $131 \, 072$, $262 \, 144$, $524 \, 288$, $1 \, 048 \, 576$:
 * $2 \, 097 \, 152 = 2^{21}$


 * The $22$nd almost perfect number after $1$, $2$, $4$, $8$, $16$, $\ldots$, $65 \, 536$, $131 \, 072$, $262 \, 144$, $524 \, 288$, $1 \, 048 \, 576$:
 * $\sigma \left({2 \, 097 \, 152}\right) = 4 \, 194 \, 303 = 2 \times 2 \, 097 \, 152 - 1$