Tuesday, March 11, 2014

1860

1860 = 2 x 2 x 3 x 5 x 31.

1860 is the number of ways to 12-color the faces of a tetrahedron (A006008).

1860 uses each of the digits from 0 to 4 once in its representation in base 6 (12340). It is 1441 in base 11.

1860 is equal to the sum of the squares of its first 11 divisors (A185584): 1860 = 12 + 22 + 32 + 42 + 52 + 62 + 102 + 122 + 152 + 202 + 302.

1860 divides 612 - 1.


1860 is a year that had five Wednesdays in the month of February (A141039).

Source: What's Special About This Number?

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