28365790 has 16 divisors (see below), whose sum is σ = 51821712. Its totient is φ = 11176704.

The previous prime is 28365773. The next prime is 28365811. The reversal of 28365790 is 9756382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20499 + ... + 21838.

It is an arithmetic number, because the mean of its divisors is an integer number (3238857).

Almost surely, 2^28365790 is an apocalyptic number.

28365790 is a deficient number, since it is larger than the sum of its proper divisors (23455922).

28365790 is a wasteful number, since it uses less digits than its factorization.

28365790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42411.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 28365790 is about 5325.9543745699. The cubic root of 28365790 is about 304.9755064089.

The spelling of 28365790 in words is "twenty-eight million, three hundred sixty-five thousand, seven hundred ninety".