16604728 has 24 divisors (see below), whose sum is σ = 36217800. Its totient is φ = 7116144.

The previous prime is 16604717. The next prime is 16604729. The reversal of 16604728 is 82740661.

It is a junction number, because it is equal to n+sod(n) for n = 16604693 and 16604702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16604729) 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, 20788 + ... + 21571.

It is an arithmetic number, because the mean of its divisors is an integer number (1509075).

Almost surely, 2^16604728 is an apocalyptic number.

It is an amenable number.

16604728 is an abundant number, since it is smaller than the sum of its proper divisors (19613072).

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

16604728 is a wasteful number, since it uses less digits than its factorization.

16604728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42379 (or 42368 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 16604728 is about 4074.8899371639. The cubic root of 16604728 is about 255.1196567741.

The spelling of 16604728 in words is "sixteen million, six hundred four thousand, seven hundred twenty-eight".