16805056 has 28 divisors (see below), whose sum is σ = 33703768. Its totient is φ = 8312832.

The previous prime is 16805053. The next prime is 16805059. The reversal of 16805056 is 65050861.

It is an interprime number because it is at equal distance from previous prime (16805053) and next prime (16805059).

It is not an unprimeable number, because it can be changed into a prime (16805053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4855 + ... + 7561.

It is an arithmetic number, because the mean of its divisors is an integer number (1203706).

Almost surely, 2^16805056 is an apocalyptic number.

16805056 is a gapful number since it is divisible by the number (16) 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 16805056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16851884).

16805056 is an abundant number, since it is smaller than the sum of its proper divisors (16898712).

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

16805056 is an equidigital number, since it uses as much as digits as its factorization.

16805056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2816 (or 2806 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 16805056 is about 4099.3970288324. The cubic root of 16805056 is about 256.1415233104.

The spelling of 16805056 in words is "sixteen million, eight hundred five thousand, fifty-six".