1976
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Number
$1976$ (one thousand, nine hundred and seventy-six) is:
- $2^3 \times 13 \times 19$
- The $26$th octagonal number, after $1$, $8$, $21$, $40$, $65$, $\ldots$, $645$, $736$, $833$, $936$, $1045$, $1160$, $1281$, $1408$, $1541$, $1680$, $1825$:
- $1976 = \ds \sum_{k \mathop = 1}^{26} \paren {6 k - 5} = 26 \paren {3 \times 26 - 2}$
Also see
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