28765084 has 12 divisors (see below), whose sum is σ = 50551200. Its totient is φ = 14321888.

The previous prime is 28765073. The next prime is 28765091. The reversal of 28765084 is 48056782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14089 + ... + 16000.

It is an arithmetic number, because the mean of its divisors is an integer number (4212600).

Almost surely, 2^28765084 is an apocalyptic number.

It is an amenable number.

28765084 is a deficient number, since it is larger than the sum of its proper divisors (21786116).

28765084 is a wasteful number, since it uses less digits than its factorization.

28765084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30332 (or 30330 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 28765084 is about 5363.3090531872. The cubic root of 28765084 is about 306.3998503636.

The spelling of 28765084 in words is "twenty-eight million, seven hundred sixty-five thousand, eighty-four".