28748252 has 54 divisors (see below), whose sum is σ = 58198392. Its totient is φ = 12396384.

The previous prime is 28748249. The next prime is 28748261. The reversal of 28748252 is 25284782.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 668543 + ... + 668585.

It is an arithmetic number, because the mean of its divisors is an integer number (1077748).

Almost surely, 2^28748252 is an apocalyptic number.

It is an amenable number.

28748252 is an abundant number, since it is smaller than the sum of its proper divisors (29450140).

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

28748252 is a wasteful number, since it uses less digits than its factorization.

28748252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 81 counting only the distinct ones).

The product of its digits is 71680, while the sum is 38.

The square root of 28748252 is about 5361.7396430636. The cubic root of 28748252 is about 306.3400750176.

The spelling of 28748252 in words is "twenty-eight million, seven hundred forty-eight thousand, two hundred fifty-two".