16889866 has 16 divisors (see below), whose sum is σ = 30213504. Its totient is φ = 6923664.

The previous prime is 16889849. The next prime is 16889867. The reversal of 16889866 is 66898861.

It is not an unprimeable number, because it can be changed into a prime (16889867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25905 + ... + 26548.

It is an arithmetic number, because the mean of its divisors is an integer number (1888344).

Almost surely, 2^16889866 is an apocalyptic number.

16889866 is a deficient number, since it is larger than the sum of its proper divisors (13323638).

16889866 is a wasteful number, since it uses less digits than its factorization.

16889866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52485.

The product of its digits is 995328, while the sum is 52.

The square root of 16889866 is about 4109.7282148580. The cubic root of 16889866 is about 256.5716899018.

The spelling of 16889866 in words is "sixteen million, eight hundred eighty-nine thousand, eight hundred sixty-six".