28102605285 has 16 divisors (see below), whose sum is σ = 45056509056. Its totient is φ = 14957275968.

The previous prime is 28102605263. The next prime is 28102605313. The reversal of 28102605285 is 58250620182.

It is not a de Polignac number, because 28102605285 - 2⁸ = 28102605029 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1916214 + ... + 1930823.

It is an arithmetic number, because the mean of its divisors is an integer number (2816031816).

Almost surely, 2^28102605285 is an apocalyptic number.

It is an amenable number.

28102605285 is a deficient number, since it is larger than the sum of its proper divisors (16953903771).

28102605285 is a wasteful number, since it uses less digits than its factorization.

28102605285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3847532.

The product of its (nonzero) digits is 76800, while the sum is 39.

The spelling of 28102605285 in words is "twenty-eight billion, one hundred two million, six hundred five thousand, two hundred eighty-five".