28865304 has 48 divisors (see below), whose sum is σ = 84193200. Its totient is φ = 8881344.

The previous prime is 28865267. The next prime is 28865327. The reversal of 28865304 is 40356882.

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 polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14484 + ... + 16355.

It is an arithmetic number, because the mean of its divisors is an integer number (1754025).

Almost surely, 2^28865304 is an apocalyptic number.

28865304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28865304 is an abundant number, since it is smaller than the sum of its proper divisors (55327896).

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

28865304 is a wasteful number, since it uses less digits than its factorization.

28865304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30864 (or 30857 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 28865304 is about 5372.6440418103. The cubic root of 28865304 is about 306.7552789506.

The spelling of 28865304 in words is "twenty-eight million, eight hundred sixty-five thousand, three hundred four".