28249752 has 16 divisors (see below), whose sum is σ = 70624440. Its totient is φ = 9416576.

The previous prime is 28249747. The next prime is 28249763. The reversal of 28249752 is 25794282.

It is a self number, because there is not a number n which added to its sum of digits gives 28249752.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 588513 + ... + 588560.

Almost surely, 2^28249752 is an apocalyptic number.

It is an amenable number.

28249752 is an abundant number, since it is smaller than the sum of its proper divisors (42374688).

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

28249752 is a wasteful number, since it uses less digits than its factorization.

28249752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177082 (or 1177078 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 28249752 is about 5315.0495764386. The cubic root of 28249752 is about 304.5590762237.

The spelling of 28249752 in words is "twenty-eight million, two hundred forty-nine thousand, seven hundred fifty-two".