18290304 has 48 divisors (see below), whose sum is σ = 52635570. Its totient is φ = 6096384.

The previous prime is 18290303. The next prime is 18290339. The reversal of 18290304 is 40309281.

It can be written as a sum of positive squares in only one way, i.e., 9290304 + 9000000 = 3048^2 + 3000^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (18290303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6787 + ... + 9090.

Almost surely, 2^18290304 is an apocalyptic number.

It is an amenable number.

18290304 is an abundant number, since it is smaller than the sum of its proper divisors (34345266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18290304 is a wasteful number, since it uses less digits than its factorization.

18290304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15897 (or 15882 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 18290304 is about 4276.7164975013. The cubic root of 18290304 is about 263.4755428358.

Adding to 18290304 its reverse (40309281), we get a palindrome (58599585).

The spelling of 18290304 in words is "eighteen million, two hundred ninety thousand, three hundred four".