28803924 has 60 divisors (see below), whose sum is σ = 79279200. Its totient is φ = 9094032.

The previous prime is 28803917. The next prime is 28803941. The reversal of 28803924 is 42930882.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 19 ways as a sum of consecutive naturals, for example, 3817 + ... + 8495.

It is an arithmetic number, because the mean of its divisors is an integer number (1321320).

Almost surely, 2^28803924 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 28803924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39639600).

28803924 is an abundant number, since it is smaller than the sum of its proper divisors (50475276).

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

28803924 is a wasteful number, since it uses less digits than its factorization.

28803924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4714 (or 4703 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 28803924 is about 5366.9287306615. The cubic root of 28803924 is about 306.5376936132.

The spelling of 28803924 in words is "twenty-eight million, eight hundred three thousand, nine hundred twenty-four".