28243752 has 32 divisors (see below), whose sum is σ = 72334080. Its totient is φ = 9184640.

The previous prime is 28243723. The next prime is 28243777. The reversal of 28243752 is 25734282.

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, 13368 + ... + 15335.

It is an arithmetic number, because the mean of its divisors is an integer number (2260440).

Almost surely, 2^28243752 is an apocalyptic number.

It is an amenable number.

28243752 is an abundant number, since it is smaller than the sum of its proper divisors (44090328).

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

28243752 is a wasteful number, since it uses less digits than its factorization.

28243752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28753 (or 28749 counting only the distinct ones).

The product of its digits is 26880, while the sum is 33.

The square root of 28243752 is about 5314.4851114666. The cubic root of 28243752 is about 304.5375128032.

The spelling of 28243752 in words is "twenty-eight million, two hundred forty-three thousand, seven hundred fifty-two".