16855224 has 32 divisors (see below), whose sum is σ = 42426240. Its totient is φ = 5580000.

The previous prime is 16855213. The next prime is 16855249. The reversal of 16855224 is 42255861.

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, 1299 + ... + 5949.

It is an arithmetic number, because the mean of its divisors is an integer number (1325820).

Almost surely, 2^16855224 is an apocalyptic number.

It is an amenable number.

16855224 is an abundant number, since it is smaller than the sum of its proper divisors (25571016).

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

16855224 is a wasteful number, since it uses less digits than its factorization.

16855224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4811 (or 4807 counting only the distinct ones).

The product of its digits is 19200, while the sum is 33.

The square root of 16855224 is about 4105.5114175946. The cubic root of 16855224 is about 256.3961558448.

The spelling of 16855224 in words is "sixteen million, eight hundred fifty-five thousand, two hundred twenty-four".