16604072 has 16 divisors (see below), whose sum is σ = 31455060. Its totient is φ = 8216064.

The previous prime is 16604059. The next prime is 16604099. The reversal of 16604072 is 27040661.

It can be written as a sum of positive squares in 2 ways, for example, as 15100996 + 1503076 = 3886^2 + 1226^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9923 + ... + 11474.

Almost surely, 2^16604072 is an apocalyptic number.

It is an amenable number.

16604072 is a deficient number, since it is larger than the sum of its proper divisors (14850988).

16604072 is a wasteful number, since it uses less digits than its factorization.

16604072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21500 (or 21496 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 16604072 is about 4074.8094433973. The cubic root of 16604072 is about 255.1162970744.

The spelling of 16604072 in words is "sixteen million, six hundred four thousand, seventy-two".