1588

1588 = 2 x 2 x 397.

1588 has a representation as a sum of two squares: 1588 = 12² + 38².

1588 is the sum of the totient function for the first 72 integers.

1588 is the maximum number of regions into which 4-space can be divided by 13 hyperspheres (A059173).

1588 is the sum of the path lengths of all binary trees with 5 edges (A138156).

The 1588th triangular number (1,261,666) contains only the digits 1, 2, and 6 (A119104).

Source: On-Line Encyclopedia of Integer Sequences