16280728 has 16 divisors (see below), whose sum is σ = 30572280. Its totient is φ = 8128128.

The previous prime is 16280723. The next prime is 16280749. The reversal of 16280728 is 82708261.

16280728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 16280693 and 16280702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16280723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6775 + ... + 8857.

Almost surely, 2^16280728 is an apocalyptic number.

It is an amenable number.

16280728 is a deficient number, since it is larger than the sum of its proper divisors (14291552).

16280728 is a wasteful number, since it uses less digits than its factorization.

16280728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066 (or 3062 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 16280728 is about 4034.9384134086. The cubic root of 16280728 is about 253.4494035677.

Adding to 16280728 its reverse (82708261), we get a palindrome (98988989).

The spelling of 16280728 in words is "sixteen million, two hundred eighty thousand, seven hundred twenty-eight".