28838924 has 6 divisors (see below), whose sum is σ = 50468124. Its totient is φ = 14419460.

The previous prime is 28838923. The next prime is 28838951. The reversal of 28838924 is 42983882.

It is not an unprimeable number, because it can be changed into a prime (28838923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3604862 + ... + 3604869.

It is an arithmetic number, because the mean of its divisors is an integer number (8411354).

Almost surely, 2^28838924 is an apocalyptic number.

It is an amenable number.

28838924 is a deficient number, since it is larger than the sum of its proper divisors (21629200).

28838924 is a wasteful number, since it uses less digits than its factorization.

28838924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7209735 (or 7209733 counting only the distinct ones).

The product of its digits is 221184, while the sum is 44.

The square root of 28838924 is about 5370.1884510695. The cubic root of 28838924 is about 306.6618025904.

The spelling of 28838924 in words is "twenty-eight million, eight hundred thirty-eight thousand, nine hundred twenty-four".