16805504 has 16 divisors (see below), whose sum is σ = 33479970. Its totient is φ = 8402688.

The previous prime is 16805447. The next prime is 16805513. The reversal of 16805504 is 40550861.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11235904 + 5569600 = 3352^2 + 2360^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a pancake number, because a pancake can be divided into 16805504 parts by 5797 straight cuts.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 65519 + ... + 65774.

Almost surely, 2^16805504 is an apocalyptic number.

It is an amenable number.

16805504 is a deficient number, since it is larger than the sum of its proper divisors (16674466).

16805504 is an equidigital number, since it uses as much as digits as its factorization.

16805504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131307 (or 131295 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 16805504 is about 4099.4516706506. The cubic root of 16805504 is about 256.1437994187.

The spelling of 16805504 in words is "sixteen million, eight hundred five thousand, five hundred four".