28566984 has 16 divisors (see below), whose sum is σ = 71417520. Its totient is φ = 9522320.

The previous prime is 28566983. The next prime is 28567031. The reversal of 28566984 is 48966582.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28566983) 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, 595122 + ... + 595169.

It is an arithmetic number, because the mean of its divisors is an integer number (4463595).

Almost surely, 2^28566984 is an apocalyptic number.

28566984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28566984 is an abundant number, since it is smaller than the sum of its proper divisors (42850536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28566984 is a wasteful number, since it uses less digits than its factorization.

28566984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190300 (or 1190296 counting only the distinct ones).

The product of its digits is 829440, while the sum is 48.

The square root of 28566984 is about 5344.8090704907. The cubic root of 28566984 is about 305.6948557915.

The spelling of 28566984 in words is "twenty-eight million, five hundred sixty-six thousand, nine hundred eighty-four".