16628886 has 24 divisors (see below), whose sum is σ = 36107760. Its totient is φ = 5530896.

The previous prime is 16628863. The next prime is 16628893. The reversal of 16628886 is 68882661.

16628886 is a `hidden beast` number, since 16 + 628 + 8 + 8 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12111 + ... + 13413.

It is an arithmetic number, because the mean of its divisors is an integer number (1504490).

Almost surely, 2^16628886 is an apocalyptic number.

16628886 is an abundant number, since it is smaller than the sum of its proper divisors (19478874).

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

16628886 is a wasteful number, since it uses less digits than its factorization.

16628886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020 (or 2017 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 16628886 is about 4077.8531116263. The cubic root of 16628886 is about 255.2433202305.

The spelling of 16628886 in words is "sixteen million, six hundred twenty-eight thousand, eight hundred eighty-six".