Thursday, March 29, 2012

3480

3480 = 2 x 2 x 2 x 3 x 5 x 29.

3480 is a Perrin number (A001608).

3480 is 110110011000 in base 2 (binary). It is 2020 in base 12.

3480 is an octagonal pyramidal number (A002414).

3480 is the number of ways to place two nonattacking queens on an 10 x 10 board (A036464).


Source: What's Special About This Number?

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