28285535305 has 16 divisors (see below), whose sum is σ = 35114799888. Its totient is φ = 21857920000.

The previous prime is 28285535297. The next prime is 28285535359. The reversal of 28285535305 is 50353558282.

It can be written as a sum of positive squares in 8 ways, for example, as 255744064 + 28029791241 = 15992^2 + 167421^2 .

It is not a de Polignac number, because 28285535305 - 2³ = 28285535297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 662356 + ... + 703765.

It is an arithmetic number, because the mean of its divisors is an integer number (2194674993).

Almost surely, 2^28285535305 is an apocalyptic number.

It is an amenable number.

28285535305 is a deficient number, since it is larger than the sum of its proper divisors (6829264583).

28285535305 is a wasteful number, since it uses less digits than its factorization.

28285535305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366268.

The product of its (nonzero) digits is 1440000, while the sum is 46.

The spelling of 28285535305 in words is "twenty-eight billion, two hundred eighty-five million, five hundred thirty-five thousand, three hundred five".