28022384 has 40 divisors (see below), whose sum is σ = 58850400. Its totient is φ = 12849408.

The previous prime is 28022383. The next prime is 28022389. The reversal of 28022384 is 48322082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28022383) by changing a digit.

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, 41054 + ... + 41730.

It is an arithmetic number, because the mean of its divisors is an integer number (1471260).

Almost surely, 2^28022384 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 28022384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29425200).

28022384 is an abundant number, since it is smaller than the sum of its proper divisors (30828016).

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

28022384 is a wasteful number, since it uses less digits than its factorization.

28022384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897 (or 891 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 28022384 is about 5293.6172887733. The cubic root of 28022384 is about 303.7397935006.

The spelling of 28022384 in words is "twenty-eight million, twenty-two thousand, three hundred eighty-four".