18016856 has 32 divisors (see below), whose sum is σ = 39690000. Its totient is φ = 7559040.

The previous prime is 18016853. The next prime is 18016861. The reversal of 18016856 is 65861081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18016853) 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 7 ways as a sum of consecutive naturals, for example, 6731 + ... + 9018.

Almost surely, 2^18016856 is an apocalyptic number.

It is an amenable number.

18016856 is an abundant number, since it is smaller than the sum of its proper divisors (21673144).

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

18016856 is a wasteful number, since it uses less digits than its factorization.

18016856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15779 (or 15775 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 18016856 is about 4244.6267209261. The cubic root of 18016856 is about 262.1559198559.

The spelling of 18016856 in words is "eighteen million, sixteen thousand, eight hundred fifty-six".