16304404 has 12 divisors (see below), whose sum is σ = 28924084. Its totient is φ = 8040384.

The previous prime is 16304399. The next prime is 16304417. The reversal of 16304404 is 40440361.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10252804 + 6051600 = 3202^2 + 2460^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27627 + ... + 28210.

Almost surely, 2^16304404 is an apocalyptic number.

It is an amenable number.

16304404 is a deficient number, since it is larger than the sum of its proper divisors (12619680).

16304404 is a wasteful number, since it uses less digits than its factorization.

16304404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55914 (or 55912 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 16304404 is about 4037.8712213244. The cubic root of 16304404 is about 253.5722023687.

Adding to 16304404 its reverse (40440361), we get a palindrome (56744765).

The spelling of 16304404 in words is "sixteen million, three hundred four thousand, four hundred four".