16904028 has 12 divisors (see below), whose sum is σ = 39442760. Its totient is φ = 5634672.

The previous prime is 16903969. The next prime is 16904039. The reversal of 16904028 is 82040961.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 16903986 and 16904004.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 704323 + ... + 704346.

Almost surely, 2^16904028 is an apocalyptic number.

It is an amenable number.

16904028 is an abundant number, since it is smaller than the sum of its proper divisors (22538732).

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

16904028 is a wasteful number, since it uses less digits than its factorization.

16904028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408676 (or 1408674 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 16904028 is about 4111.4508388159. The cubic root of 16904028 is about 256.6433808826.

Adding to 16904028 its reverse (82040961), we get a palindrome (98944989).

The spelling of 16904028 in words is "sixteen million, nine hundred four thousand, twenty-eight".