28465538236 has 48 divisors (see below), whose sum is σ = 52381274400. Its totient is φ = 13517084672.

The previous prime is 28465538201. The next prime is 28465538267. The reversal of 28465538236 is 63283556482.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2236980 + ... + 2249668.

It is an arithmetic number, because the mean of its divisors is an integer number (1091276550).

Almost surely, 2^28465538236 is an apocalyptic number.

It is an amenable number.

28465538236 is a deficient number, since it is larger than the sum of its proper divisors (23915736164).

28465538236 is a wasteful number, since it uses less digits than its factorization.

28465538236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13038 (or 13036 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 52.

The spelling of 28465538236 in words is "twenty-eight billion, four hundred sixty-five million, five hundred thirty-eight thousand, two hundred thirty-six".