16628668 has 24 divisors (see below), whose sum is σ = 33362784. Its totient is φ = 7104000.

The previous prime is 16628653. The next prime is 16628681. The reversal of 16628668 is 86682661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10488 + ... + 11968.

It is an arithmetic number, because the mean of its divisors is an integer number (1390116).

Almost surely, 2^16628668 is an apocalyptic number.

It is an amenable number.

16628668 is an abundant number, since it is smaller than the sum of its proper divisors (16734116).

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

16628668 is a wasteful number, since it uses less digits than its factorization.

16628668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893 (or 1891 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The square root of 16628668 is about 4077.8263817872. The cubic root of 16628668 is about 255.2422048364.

The spelling of 16628668 in words is "sixteen million, six hundred twenty-eight thousand, six hundred sixty-eight".