16644316 has 12 divisors (see below), whose sum is σ = 31368232. Its totient is φ = 7681968.

The previous prime is 16644301. The next prime is 16644337. The reversal of 16644316 is 61344661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159990 + ... + 160093.

Almost surely, 2^16644316 is an apocalyptic number.

It is an amenable number.

16644316 is a deficient number, since it is larger than the sum of its proper divisors (14723916).

16644316 is a wasteful number, since it uses less digits than its factorization.

16644316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320100 (or 320098 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 16644316 is about 4079.7445998494. The cubic root of 16644316 is about 255.3222428737.

Adding to 16644316 its reverse (61344661), we get a palindrome (77988977).

The spelling of 16644316 in words is "sixteen million, six hundred forty-four thousand, three hundred sixteen".