16664288 has 12 divisors (see below), whose sum is σ = 32807880. Its totient is φ = 8332128.

The previous prime is 16664261. The next prime is 16664317. The reversal of 16664288 is 88246661.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 260348 + ... + 260411.

It is an arithmetic number, because the mean of its divisors is an integer number (2733990).

Almost surely, 2^16664288 is an apocalyptic number.

It is an amenable number.

16664288 is a deficient number, since it is larger than the sum of its proper divisors (16143592).

16664288 is an equidigital number, since it uses as much as digits as its factorization.

16664288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520769 (or 520761 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 16664288 is about 4082.1915682633. The cubic root of 16664288 is about 255.4243249217.

The spelling of 16664288 in words is "sixteen million, six hundred sixty-four thousand, two hundred eighty-eight".