16662988 has 18 divisors (see below), whose sum is σ = 29740844. Its totient is φ = 8168784.

The previous prime is 16662979. The next prime is 16662991. The reversal of 16662988 is 88926661.

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 in 5 ways as a sum of consecutive naturals, for example, 10495 + ... + 11977.

Almost surely, 2^16662988 is an apocalyptic number.

It is an amenable number.

16662988 is a deficient number, since it is larger than the sum of its proper divisors (13077856).

16662988 is a wasteful number, since it uses less digits than its factorization.

16662988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593 (or 1538 counting only the distinct ones).

The product of its digits is 248832, while the sum is 46.

The square root of 16662988 is about 4082.0323369616. The cubic root of 16662988 is about 255.4176827686.

The spelling of 16662988 in words is "sixteen million, six hundred sixty-two thousand, nine hundred eighty-eight".