28535087047 has 4 divisors (see below), whose sum is σ = 28536126120. Its totient is φ = 28534047976.

The previous prime is 28535087041. The next prime is 28535087071. The reversal of 28535087047 is 74078053582.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28535087047 - 2³ = 28535087039 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 (28535087041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477193 + ... + 533650.

It is an arithmetic number, because the mean of its divisors is an integer number (7134031530).

Almost surely, 2^28535087047 is an apocalyptic number.

28535087047 is a deficient number, since it is larger than the sum of its proper divisors (1039073).

28535087047 is a wasteful number, since it uses less digits than its factorization.

28535087047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039072.

The product of its (nonzero) digits is 1881600, while the sum is 49.

The spelling of 28535087047 in words is "twenty-eight billion, five hundred thirty-five million, eighty-seven thousand, forty-seven".