28543264 has 24 divisors (see below), whose sum is σ = 56363580. Its totient is φ = 14228736.

The previous prime is 28543259. The next prime is 28543327. The reversal of 28543264 is 46234582.

It can be written as a sum of positive squares in 2 ways, for example, as 26832400 + 1710864 = 5180^2 + 1308^2 .

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, 11302 + ... + 13594.

Almost surely, 2^28543264 is an apocalyptic number.

It is an amenable number.

28543264 is a deficient number, since it is larger than the sum of its proper divisors (27820316).

28543264 is a wasteful number, since it uses less digits than its factorization.

28543264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2692 (or 2684 counting only the distinct ones).

The product of its digits is 46080, while the sum is 34.

The square root of 28543264 is about 5342.5896342504. The cubic root of 28543264 is about 305.6102232447.

The spelling of 28543264 in words is "twenty-eight million, five hundred forty-three thousand, two hundred sixty-four".