16290304 has 20 divisors (see below), whose sum is σ = 32549814. Its totient is φ = 8144896.

The previous prime is 16290299. The next prime is 16290317. The reversal of 16290304 is 40309261.

It can be written as a sum of positive squares in only one way, i.e., 10758400 + 5531904 = 3280^2 + 2352^2 .

It is a nialpdrome in base 8.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15397 + ... + 16420.

Almost surely, 2^16290304 is an apocalyptic number.

It is an amenable number.

16290304 is a deficient number, since it is larger than the sum of its proper divisors (16259510).

16290304 is an frugal number, since it uses more digits than its factorization.

16290304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31835 (or 31819 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 16290304 is about 4036.1248741832. The cubic root of 16290304 is about 253.4990851257.

Adding to 16290304 its reverse (40309261), we get a palindrome (56599565).

The spelling of 16290304 in words is "sixteen million, two hundred ninety thousand, three hundred four".