28324384 has 48 divisors (see below), whose sum is σ = 61792416. Its totient is φ = 12672000.

The previous prime is 28324381. The next prime is 28324393. The reversal of 28324384 is 48342382.

It is not an unprimeable number, because it can be changed into a prime (28324381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22984 + ... + 24184.

It is an arithmetic number, because the mean of its divisors is an integer number (1287342).

Almost surely, 2^28324384 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 28324384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30896208).

28324384 is an abundant number, since it is smaller than the sum of its proper divisors (33468032).

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

28324384 is a wasteful number, since it uses less digits than its factorization.

28324384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289 (or 1281 counting only the distinct ones).

The product of its digits is 36864, while the sum is 34.

The square root of 28324384 is about 5322.0657643438. The cubic root of 28324384 is about 304.8270415957.

The spelling of 28324384 in words is "twenty-eight million, three hundred twenty-four thousand, three hundred eighty-four".