104

104 = 2³ x 13.

104 has a representation as a sum of two squares: 104 = 2² + 10².

104 is the number of integer partitions of 23 into distinct parts.

104 is a divisor of 25² - 1.

104 is 88 in base 12.

104 is the atomic number of the element rutherfordium.

Source: Wikipedia