28564824 has 16 divisors (see below), whose sum is σ = 71412120. Its totient is φ = 9521600.

The previous prime is 28564819. The next prime is 28564871. The reversal of 28564824 is 42846582.

It is a super-3 number, since 3×28564824³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

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, 595077 + ... + 595124.

Almost surely, 2^28564824 is an apocalyptic number.

28564824 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28564824 is an abundant number, since it is smaller than the sum of its proper divisors (42847296).

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

28564824 is a wasteful number, since it uses less digits than its factorization.

28564824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190210 (or 1190206 counting only the distinct ones).

The product of its digits is 122880, while the sum is 39.

The square root of 28564824 is about 5344.6070014548. The cubic root of 28564824 is about 305.6871508884.

The spelling of 28564824 in words is "twenty-eight million, five hundred sixty-four thousand, eight hundred twenty-four".