16889904 has 40 divisors (see below), whose sum is σ = 48481520. Its totient is φ = 5629824.

The previous prime is 16889893. The next prime is 16889921. The reversal of 16889904 is 40998861.

It is a super-3 number, since 3×16889904³ (a number of 23 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 16889904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19117 + ... + 19980.

It is an arithmetic number, because the mean of its divisors is an integer number (1212038).

Almost surely, 2^16889904 is an apocalyptic number.

It is an amenable number.

16889904 is an abundant number, since it is smaller than the sum of its proper divisors (31591616).

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

16889904 is a wasteful number, since it uses less digits than its factorization.

16889904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39114 (or 39102 counting only the distinct ones).

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

The square root of 16889904 is about 4109.7328380322. The cubic root of 16889904 is about 256.5718823193.

The spelling of 16889904 in words is "sixteen million, eight hundred eighty-nine thousand, nine hundred four".