16805712 has 80 divisors (see below), whose sum is σ = 54139392. Its totient is φ = 4364160.

The previous prime is 16805687. The next prime is 16805713. The reversal of 16805712 is 21750861.

It is a self number, because there is not a number n which added to its sum of digits gives 16805712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16805713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1423 + ... + 5969.

Almost surely, 2^16805712 is an apocalyptic number.

16805712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16805712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27069696).

16805712 is an abundant number, since it is smaller than the sum of its proper divisors (37333680).

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

16805712 is a wasteful number, since it uses less digits than its factorization.

16805712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4576 (or 4570 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 16805712 is about 4099.4770398186. The cubic root of 16805712 is about 256.1448561695.

The spelling of 16805712 in words is "sixteen million, eight hundred five thousand, seven hundred twelve".