28385276105285 has 32 divisors (see below), whose sum is σ = 37507274508672. Its totient is φ = 20450310810880.

The previous prime is 28385276105281. The next prime is 28385276105287. The reversal of 28385276105285 is 58250167258382.

It is not a de Polignac number, because 28385276105285 - 2² = 28385276105281 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28385276105281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 361847087 + ... + 361925523.

It is an arithmetic number, because the mean of its divisors is an integer number (1172102328396).

Almost surely, 2^{28385276105285} is an apocalyptic number.

It is an amenable number.

28385276105285 is a deficient number, since it is larger than the sum of its proper divisors (9121998403387).

28385276105285 is a wasteful number, since it uses less digits than its factorization.

28385276105285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140053.

The product of its (nonzero) digits is 64512000, while the sum is 62.

The spelling of 28385276105285 in words is "twenty-eight trillion, three hundred eighty-five billion, two hundred seventy-six million, one hundred five thousand, two hundred eighty-five".