28005288135 has 16 divisors (see below), whose sum is σ = 48881957760. Its totient is φ = 13578321440.

The previous prime is 28005288133. The next prime is 28005288149. The reversal of 28005288135 is 53188250082.

It is not a de Polignac number, because 28005288135 - 2¹ = 28005288133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28005288133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84864345 + ... + 84864674.

It is an arithmetic number, because the mean of its divisors is an integer number (3055122360).

Almost surely, 2^28005288135 is an apocalyptic number.

28005288135 is a deficient number, since it is larger than the sum of its proper divisors (20876669625).

28005288135 is a wasteful number, since it uses less digits than its factorization.

28005288135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169729038.

The product of its (nonzero) digits is 153600, while the sum is 42.

The spelling of 28005288135 in words is "twenty-eight billion, five million, two hundred eighty-eight thousand, one hundred thirty-five".