2072
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Number
$2072$ (two thousand and seventy-two) is:
- $2^3 \times 7 \times 37$
- The $37$th second pentagonal number after $2$, $7$, $15$, $26$, $\ldots$, $1107$, $1190$, $1276$, $1365$, $1457$, $1552$, $1650$, $1751$, $1855$, $1962$:
- $2072 = \dfrac {37 \paren {3 \times 37 + 1} } 2$
- The $74$th generalized pentagonal number after $1$, $2$, $5$, $7$, $12$, $15$, $\ldots$, $1617$, $1650$, $1717$, $1751$, $1820$, $1855$, $1926$, $1962$, $2035$:
- $2072 = \dfrac {37 \paren {3 \times 37 + 1} } 2$