28442048 has 28 divisors (see below), whose sum is σ = 57969912. Its totient is φ = 13835520.

The previous prime is 28442047. The next prime is 28442087. The reversal of 28442048 is 84024482.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28442047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3638 + ... + 8373.

It is an arithmetic number, because the mean of its divisors is an integer number (2070354).

Almost surely, 2^28442048 is an apocalyptic number.

It is an amenable number.

28442048 is an abundant number, since it is smaller than the sum of its proper divisors (29527864).

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

28442048 is a wasteful number, since it uses less digits than its factorization.

28442048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12060 (or 12050 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

The square root of 28442048 is about 5333.1086619344. The cubic root of 28442048 is about 305.2485584690.

The spelling of 28442048 in words is "twenty-eight million, four hundred forty-two thousand, forty-eight".