28584628 has 6 divisors (see below), whose sum is σ = 50023106. Its totient is φ = 14292312.

The previous prime is 28584623. The next prime is 28584629. The reversal of 28584628 is 82648582.

It can be written as a sum of positive squares in only one way, i.e., 18164644 + 10419984 = 4262^2 + 3228^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28584623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3573075 + ... + 3573082.

Almost surely, 2^28584628 is an apocalyptic number.

It is an amenable number.

28584628 is a deficient number, since it is larger than the sum of its proper divisors (21438478).

28584628 is a wasteful number, since it uses less digits than its factorization.

28584628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7146161 (or 7146159 counting only the distinct ones).

The product of its digits is 245760, while the sum is 43.

The square root of 28584628 is about 5346.4593891659. The cubic root of 28584628 is about 305.7577788962.

The spelling of 28584628 in words is "twenty-eight million, five hundred eighty-four thousand, six hundred twenty-eight".