16404856 has 16 divisors (see below), whose sum is σ = 33125400. Its totient is φ = 7571424.

The previous prime is 16404851. The next prime is 16404863. The reversal of 16404856 is 65840461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16404851) by changing a digit.

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, 78766 + ... + 78973.

Almost surely, 2^16404856 is an apocalyptic number.

It is an amenable number.

16404856 is an abundant number, since it is smaller than the sum of its proper divisors (16720544).

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

16404856 is a wasteful number, since it uses less digits than its factorization.

16404856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157758 (or 157754 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 16404856 is about 4050.2908537536. The cubic root of 16404856 is about 254.0918922683.

The spelling of 16404856 in words is "sixteen million, four hundred four thousand, eight hundred fifty-six".