28872384 has 28 divisors (see below), whose sum is σ = 76392024. Its totient is φ = 9624064.

The previous prime is 28872379. The next prime is 28872397. The reversal of 28872384 is 48327882.

It is a super-2 number, since 2×28872384² = 1667229115686912, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74997 + ... + 75380.

Almost surely, 2^28872384 is an apocalyptic number.

28872384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28872384 is an abundant number, since it is smaller than the sum of its proper divisors (47519640).

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

28872384 is a wasteful number, since it uses less digits than its factorization.

28872384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150392 (or 150382 counting only the distinct ones).

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

The square root of 28872384 is about 5373.3028948683. The cubic root of 28872384 is about 306.7803569223.

The spelling of 28872384 in words is "twenty-eight million, eight hundred seventy-two thousand, three hundred eighty-four".