16666328 has 16 divisors (see below), whose sum is σ = 35713680. Its totient is φ = 7142688.

The previous prime is 16666319. The next prime is 16666343. The reversal of 16666328 is 82366661.

It is a junction number, because it is equal to n+sod(n) for n = 16666291 and 16666300.

It is a congruent number.

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, 148751 + ... + 148862.

It is an arithmetic number, because the mean of its divisors is an integer number (2232105).

Almost surely, 2^16666328 is an apocalyptic number.

It is an amenable number.

16666328 is an abundant number, since it is smaller than the sum of its proper divisors (19047352).

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

16666328 is a wasteful number, since it uses less digits than its factorization.

16666328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297626 (or 297622 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 16666328 is about 4082.4414264016. The cubic root of 16666328 is about 255.4347472964.

The spelling of 16666328 in words is "sixteen million, six hundred sixty-six thousand, three hundred twenty-eight".