8228728 has 16 divisors (see below), whose sum is σ = 15574680. Its totient is φ = 4075488.

The previous prime is 8228723. The next prime is 8228747. The reversal of 8228728 is 8278228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8228723) 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, 3951 + ... + 5662.

Almost surely, 2^8228728 is an apocalyptic number.

It is an amenable number.

8228728 is a deficient number, since it is larger than the sum of its proper divisors (7345952).

8228728 is a wasteful number, since it uses less digits than its factorization.

8228728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9726 (or 9722 counting only the distinct ones).

The product of its digits is 28672, while the sum is 37.

The square root of 8228728 is about 2868.5759533260. The cubic root of 8228728 is about 201.8881843671. Note that the first 3 decimals are identical.

The spelling of 8228728 in words is "eight million, two hundred twenty-eight thousand, seven hundred twenty-eight".