Friday, February 7, 2014

2580

2580 = 2 x 2 x 3 x 5 x 43.

2580 is a Keith number (A130010).

2580 is 220110 in base 4.

2580 is divisible by the sum of the cubes of its digits (A034088): 2580/(23 + 53 + 83 + 03) = 4.

2580 is the sum of the first 38 primes minus the next prime (A166448).

2580 divides 496 - 1.


2580 is a year in which the month of February has five Tuesdays (A143994).

Source: What's Special About This Number?

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