16604736 has 56 divisors (see below), whose sum is σ = 44256960. Its totient is φ = 5494272.

The previous prime is 16604729. The next prime is 16604737. The reversal of 16604736 is 63740661.

It is a junction number, because it is equal to n+sod(n) for n = 16604697 and 16604706.

It is not an unprimeable number, because it can be changed into a prime (16604737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37605 + ... + 38043.

Almost surely, 2^16604736 is an apocalyptic number.

16604736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16604736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22128480).

16604736 is an abundant number, since it is smaller than the sum of its proper divisors (27652224).

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

16604736 is a wasteful number, since it uses less digits than its factorization.

16604736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651 (or 641 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 16604736 is about 4074.8909187854. The cubic root of 16604736 is about 255.1196977455.

The spelling of 16604736 in words is "sixteen million, six hundred four thousand, seven hundred thirty-six".