16128866 has 16 divisors (see below), whose sum is σ = 26896128. Its totient is φ = 7203600.

The previous prime is 16128863. The next prime is 16128883. The reversal of 16128866 is 66882161.

16128866 is a modest number, since divided by 8866 gives 1612 as remainder.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16128863) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9200 + ... + 10811.

It is an arithmetic number, because the mean of its divisors is an integer number (1681008).

Almost surely, 2^16128866 is an apocalyptic number.

16128866 is a deficient number, since it is larger than the sum of its proper divisors (10767262).

16128866 is a wasteful number, since it uses less digits than its factorization.

16128866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20057.

The product of its digits is 27648, while the sum is 38.

The square root of 16128866 is about 4016.0759454970. The cubic root of 16128866 is about 252.6589059545.

The spelling of 16128866 in words is "sixteen million, one hundred twenty-eight thousand, eight hundred sixty-six".