28365598 has 4 divisors (see below), whose sum is σ = 42548400. Its totient is φ = 14182798.

The previous prime is 28365587. The next prime is 28365611. The reversal of 28365598 is 89556382.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 7091398 + ... + 7091401.

It is an arithmetic number, because the mean of its divisors is an integer number (10637100).

Almost surely, 2^28365598 is an apocalyptic number.

28365598 is a deficient number, since it is larger than the sum of its proper divisors (14182802).

28365598 is a wasteful number, since it uses less digits than its factorization.

28365598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14182801.

The product of its digits is 518400, while the sum is 46.

The square root of 28365598 is about 5325.9363496009. The cubic root of 28365598 is about 304.9748183098.

The spelling of 28365598 in words is "twenty-eight million, three hundred sixty-five thousand, five hundred ninety-eight".