16804438 has 16 divisors (see below), whose sum is σ = 29587104. Its totient is φ = 7007040.

The previous prime is 16804433. The next prime is 16804451. The reversal of 16804438 is 83440861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16804433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15703 + ... + 16738.

It is an arithmetic number, because the mean of its divisors is an integer number (1849194).

Almost surely, 2^16804438 is an apocalyptic number.

16804438 is a deficient number, since it is larger than the sum of its proper divisors (12782666).

16804438 is a wasteful number, since it uses less digits than its factorization.

16804438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32487.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 16804438 is about 4099.3216512004. The cubic root of 16804438 is about 256.1383834339.

The spelling of 16804438 in words is "sixteen million, eight hundred four thousand, four hundred thirty-eight".