16855412 has 36 divisors (see below), whose sum is σ = 35814240. Its totient is φ = 6907824.

The previous prime is 16855393. The next prime is 16855417. The reversal of 16855412 is 21455861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16855417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2639 + ... + 6377.

It is an arithmetic number, because the mean of its divisors is an integer number (994840).

Almost surely, 2^16855412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16855412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17907120).

16855412 is an abundant number, since it is smaller than the sum of its proper divisors (18958828).

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

16855412 is a wasteful number, since it uses less digits than its factorization.

16855412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3780 (or 3771 counting only the distinct ones).

The product of its digits is 9600, while the sum is 32.

The square root of 16855412 is about 4105.5343135821. The cubic root of 16855412 is about 256.3971091061.

The spelling of 16855412 in words is "sixteen million, eight hundred fifty-five thousand, four hundred twelve".