28668384 has 48 divisors (see below), whose sum is σ = 83618640. Its totient is φ = 9555840.

The previous prime is 28668379. The next prime is 28668421. The reversal of 28668384 is 48386682.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a nude number because it is divisible by every one of its digits.

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, 15727 + ... + 17454.

It is an arithmetic number, because the mean of its divisors is an integer number (1742055).

Almost surely, 2^28668384 is an apocalyptic number.

28668384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28668384 is an abundant number, since it is smaller than the sum of its proper divisors (54950256).

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

28668384 is a wasteful number, since it uses less digits than its factorization.

28668384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33200 (or 33186 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 28668384 is about 5354.2865070894. The cubic root of 28668384 is about 306.0561219631.

The spelling of 28668384 in words is "twenty-eight million, six hundred sixty-eight thousand, three hundred eighty-four".