28468228 has 6 divisors (see below), whose sum is σ = 49819406. Its totient is φ = 14234112.

The previous prime is 28468201. The next prime is 28468243. The reversal of 28468228 is 82286482.

It can be written as a sum of positive squares in only one way, i.e., 28068804 + 399424 = 5298^2 + 632^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3558525 + ... + 3558532.

Almost surely, 2^28468228 is an apocalyptic number.

It is an amenable number.

28468228 is a deficient number, since it is larger than the sum of its proper divisors (21351178).

28468228 is a wasteful number, since it uses less digits than its factorization.

28468228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7117061 (or 7117059 counting only the distinct ones).

The product of its digits is 98304, while the sum is 40.

The square root of 28468228 is about 5335.5625757740. The cubic root of 28468228 is about 305.3421869420.

The spelling of 28468228 in words is "twenty-eight million, four hundred sixty-eight thousand, two hundred twenty-eight".