28819824 has 40 divisors (see below), whose sum is σ = 81220992. Its totient is φ = 8733120.

The previous prime is 28819793. The next prime is 28819829. The reversal of 28819824 is 42891882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28819829) 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, 26764 + ... + 27819.

Almost surely, 2^28819824 is an apocalyptic number.

28819824 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28819824 is an abundant number, since it is smaller than the sum of its proper divisors (52401168).

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

28819824 is a wasteful number, since it uses less digits than its factorization.

28819824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54605 (or 54599 counting only the distinct ones).

The product of its digits is 73728, while the sum is 42.

The square root of 28819824 is about 5368.4098204217. The cubic root of 28819824 is about 306.5940870035.

The spelling of 28819824 in words is "twenty-eight million, eight hundred nineteen thousand, eight hundred twenty-four".