28573824 has 32 divisors (see below), whose sum is σ = 75900240. Its totient is φ = 9524480.

The previous prime is 28573819. The next prime is 28573841. The reversal of 28573824 is 42837582.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36822 + ... + 37589.

Almost surely, 2^28573824 is an apocalyptic number.

28573824 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28573824 is an abundant number, since it is smaller than the sum of its proper divisors (47326416).

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

28573824 is an equidigital number, since it uses as much as digits as its factorization.

28573824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74428 (or 74416 counting only the distinct ones).

The product of its digits is 107520, while the sum is 39.

The square root of 28573824 is about 5345.4489053774. The cubic root of 28573824 is about 305.7192520894.

The spelling of 28573824 in words is "twenty-eight million, five hundred seventy-three thousand, eight hundred twenty-four".