16855804 has 18 divisors (see below), whose sum is σ = 34314000. Its totient is φ = 7223832.

The previous prime is 16855801. The next prime is 16855807. The reversal of 16855804 is 40855861.

It is an interprime number because it is at equal distance from previous prime (16855801) and next prime (16855807).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16855801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42804 + ... + 43195.

Almost surely, 2^16855804 is an apocalyptic number.

16855804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16855804 is an abundant number, since it is smaller than the sum of its proper divisors (17458196).

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

16855804 is a wasteful number, since it uses less digits than its factorization.

16855804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86017 (or 86008 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 16855804 is about 4105.5820537410. The cubic root of 16855804 is about 256.3990967345.

The spelling of 16855804 in words is "sixteen million, eight hundred fifty-five thousand, eight hundred four".