16544404 has 12 divisors (see below), whose sum is σ = 29037204. Its totient is φ = 8248064.

The previous prime is 16544401. The next prime is 16544419. The reversal of 16544404 is 40444561.

It can be written as a sum of positive squares in 2 ways, for example, as 2256004 + 14288400 = 1502^2 + 3780^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16544401) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 4447 + ... + 7270.

It is an arithmetic number, because the mean of its divisors is an integer number (2419767).

Almost surely, 2^16544404 is an apocalyptic number.

It is an amenable number.

16544404 is a deficient number, since it is larger than the sum of its proper divisors (12492800).

16544404 is a wasteful number, since it uses less digits than its factorization.

16544404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12074 (or 12072 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 16544404 is about 4067.4812845298. The cubic root of 16544404 is about 254.8103369894.

Adding to 16544404 its reverse (40444561), we get a palindrome (56988965).

The spelling of 16544404 in words is "sixteen million, five hundred forty-four thousand, four hundred four".