28324512 has 48 divisors (see below), whose sum is σ = 82615680. Its totient is φ = 9441216.

The previous prime is 28324507. The next prime is 28324531. The reversal of 28324512 is 21542382.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15528 + ... + 17255.

It is an arithmetic number, because the mean of its divisors is an integer number (1721160).

Almost surely, 2^28324512 is an apocalyptic number.

It is an amenable number.

28324512 is an abundant number, since it is smaller than the sum of its proper divisors (54291168).

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

28324512 is a wasteful number, since it uses less digits than its factorization.

28324512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32802 (or 32788 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 28324512 is about 5322.0777897359. The cubic root of 28324512 is about 304.8275007737.

Adding to 28324512 its reverse (21542382), we get a palindrome (49866894).

The spelling of 28324512 in words is "twenty-eight million, three hundred twenty-four thousand, five hundred twelve".