16889816 has 16 divisors (see below), whose sum is σ = 31835400. Its totient is φ = 8400384.

The previous prime is 16889809. The next prime is 16889819. The reversal of 16889816 is 61898861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16889819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3926 + ... + 7013.

Almost surely, 2^16889816 is an apocalyptic number.

It is an amenable number.

16889816 is a deficient number, since it is larger than the sum of its proper divisors (14945584).

16889816 is a wasteful number, since it uses less digits than its factorization.

16889816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11138 (or 11134 counting only the distinct ones).

The product of its digits is 165888, while the sum is 47.

The square root of 16889816 is about 4109.7221317262. The cubic root of 16889816 is about 256.5714367205.

The spelling of 16889816 in words is "sixteen million, eight hundred eighty-nine thousand, eight hundred sixteen".