16889166 has 48 divisors (see below), whose sum is σ = 42052608. Its totient is φ = 4798800.

The previous prime is 16889161. The next prime is 16889179. The reversal of 16889166 is 66198861.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16889161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38971 + ... + 39401.

It is an arithmetic number, because the mean of its divisors is an integer number (876096).

Almost surely, 2^16889166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16889166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21026304).

16889166 is an abundant number, since it is smaller than the sum of its proper divisors (25163442).

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

16889166 is a wasteful number, since it uses less digits than its factorization.

16889166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757 (or 754 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 16889166 is about 4109.6430501930. The cubic root of 16889166 is about 256.5681453175.

The spelling of 16889166 in words is "sixteen million, eight hundred eighty-nine thousand, one hundred sixty-six".