16544428 has 12 divisors (see below), whose sum is σ = 29349880. Its totient is φ = 8158752.

The previous prime is 16544419. The next prime is 16544431. The reversal of 16544428 is 82444561.

It is a junction number, because it is equal to n+sod(n) for n = 16544393 and 16544402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28038 + ... + 28621.

Almost surely, 2^16544428 is an apocalyptic number.

It is an amenable number.

16544428 is a deficient number, since it is larger than the sum of its proper divisors (12805452).

16544428 is a wasteful number, since it uses less digits than its factorization.

16544428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56736 (or 56734 counting only the distinct ones).

The product of its digits is 30720, while the sum is 34.

The square root of 16544428 is about 4067.4842347574. The cubic root of 16544428 is about 254.8104602021.

Adding to 16544428 its reverse (82444561), we get a palindrome (98988989).

The spelling of 16544428 in words is "sixteen million, five hundred forty-four thousand, four hundred twenty-eight".