It is an Ulam number.
It is a congruent number.
It is an unprimeable number.
30004 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
230004 is an apocalyptic number.
It is an amenable number.
30004 is a wasteful number, since it uses less digits than its factorization.
30004 is an evil number, because the sum of its binary digits is even.
The square root of 30004 is about 173.2166273774. The cubic root of 30004 is about 31.0737059904.
Subtracting from 30004 its product of nonzero digits (12), we obtain a palindrome (29992).
Adding to 30004 its reverse (40003), we get a palindrome (70007).
Subtracting 30004 from its reverse (40003), we obtain a palindrome (9999).
The spelling of 30004 in words is "thirty thousand, four", and thus it is an eban number.