28786252 has 12 divisors (see below), whose sum is σ = 54955656. Its totient is φ = 13084640.

The previous prime is 28786217. The next prime is 28786283. The reversal of 28786252 is 25268782.

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, 327073 + ... + 327160.

It is an arithmetic number, because the mean of its divisors is an integer number (4579638).

Almost surely, 2^28786252 is an apocalyptic number.

28786252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28786252 is a deficient number, since it is larger than the sum of its proper divisors (26169404).

28786252 is a wasteful number, since it uses less digits than its factorization.

28786252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654248 (or 654246 counting only the distinct ones).

The product of its digits is 107520, while the sum is 40.

The square root of 28786252 is about 5365.2820988276. The cubic root of 28786252 is about 306.4749910181.

The spelling of 28786252 in words is "twenty-eight million, seven hundred eighty-six thousand, two hundred fifty-two".