Adding to 290304 its reverse (403092), we get a palindrome (693396).
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 290304.
It is an unprimeable number.
290304 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2290304 is an apocalyptic number.
290304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 290304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (495132).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
290304 is an frugal number, since it uses more digits than its factorization.
290304 is an evil number, because the sum of its binary digits is even.
The square root of 290304 is about 538.7986636954. The cubic root of 290304 is about 66.2141802331.
The spelling of 290304 in words is "two hundred ninety thousand, three hundred four".