28783248 has 80 divisors (see below), whose sum is σ = 80828160. Its totient is φ = 8773632.

The previous prime is 28783219. The next prime is 28783301. The reversal of 28783248 is 84238782.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120313 + ... + 120551.

It is an arithmetic number, because the mean of its divisors is an integer number (1010352).

Almost surely, 2^28783248 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 28783248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40414080).

28783248 is an abundant number, since it is smaller than the sum of its proper divisors (52044912).

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

28783248 is a wasteful number, since it uses less digits than its factorization.

28783248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 450 counting only the distinct ones).

The product of its digits is 172032, while the sum is 42.

The square root of 28783248 is about 5365.0021435224. The cubic root of 28783248 is about 306.4643298768.

The spelling of 28783248 in words is "twenty-eight million, seven hundred eighty-three thousand, two hundred forty-eight".