Wednesday, October 16, 2013

7627

7627 = 29 x 263.

7627 is the sum of seven distinct powers of three (A038469).

7627 is a number n such that sigma(n) divides sigma(phi(n)); sigma(phi(n))/sigma(n) = 2 (A066831 and A067382).

7627 is 11414 is base 9 (A032821).

7627 is the number of binary strings of length 22 with no substrings equal to 0001 0010 or 1101 (A164452).

7627 has exactly 7 1s when represented in base 3 (A023698): 101110111.


Source: On-Line Encyclopedia of Integer Sequences

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