16520884 has 6 divisors (see below), whose sum is σ = 28911554. Its totient is φ = 8260440.

The previous prime is 16520879. The next prime is 16520893. The reversal of 16520884 is 48802561.

It can be written as a sum of positive squares in only one way, i.e., 10419984 + 6100900 = 3228^2 + 2470^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2065107 + ... + 2065114.

Almost surely, 2^16520884 is an apocalyptic number.

It is an amenable number.

16520884 is a deficient number, since it is larger than the sum of its proper divisors (12390670).

16520884 is a wasteful number, since it uses less digits than its factorization.

16520884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4130225 (or 4130223 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 16520884 is about 4064.5890321163. The cubic root of 16520884 is about 254.6895311592.

The spelling of 16520884 in words is "sixteen million, five hundred twenty thousand, eight hundred eighty-four".