8728228 has 6 divisors (see below), whose sum is σ = 15274406. Its totient is φ = 4364112.

The previous prime is 8728211. The next prime is 8728241. The reversal of 8728228 is 8228278.

It can be written as a sum of positive squares in only one way, i.e., 8714304 + 13924 = 2952^2 + 118^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1091025 + ... + 1091032.

Almost surely, 2^8728228 is an apocalyptic number.

It is an amenable number.

8728228 is a deficient number, since it is larger than the sum of its proper divisors (6546178).

8728228 is a wasteful number, since it uses less digits than its factorization.

8728228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2182061 (or 2182059 counting only the distinct ones).

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

The square root of 8728228 is about 2954.3574597533. The cubic root of 8728228 is about 205.8932113745.

The spelling of 8728228 in words is "eight million, seven hundred twenty-eight thousand, two hundred twenty-eight".