Tuesday, March 6, 2012

958

958 = 2 x 479.

958 is the number of 3-colorable graphs with 5 vertices (A084279).

958 is a Smith number (A006753); the sum of its digits equals the sum of the digits of its prime factors: 9 + 5 + 8 = 2 + 4 + 7 + 9 = 22.

9582 = 917764 and 9592 = 919681 have the same digit sum (A202089): 34.


Source: What's Special About This Number?

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