28748512 has 48 divisors (see below), whose sum is σ = 63080640. Its totient is φ = 12805632.

The previous prime is 28748509. The next prime is 28748521. The reversal of 28748512 is 21584782.

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 7 ways as a sum of consecutive naturals, for example, 10873 + ... + 13255.

It is an arithmetic number, because the mean of its divisors is an integer number (1314180).

Almost surely, 2^28748512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28748512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31540320).

28748512 is an abundant number, since it is smaller than the sum of its proper divisors (34332128).

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

28748512 is a wasteful number, since it uses less digits than its factorization.

28748512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2435 (or 2427 counting only the distinct ones).

The product of its digits is 35840, while the sum is 37.

The square root of 28748512 is about 5361.7638888709. The cubic root of 28748512 is about 306.3409985309.

The spelling of 28748512 in words is "twenty-eight million, seven hundred forty-eight thousand, five hundred twelve".