28088168253287 has 4 divisors (see below), whose sum is σ = 28088184785616. Its totient is φ = 28088151720960.

The previous prime is 28088168253247. The next prime is 28088168253293. The reversal of 28088168253287 is 78235286188082.

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 28088168253287 - 2²⁰ = 28088167204711 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 (28088168253247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5382323 + ... + 9227444.

It is an arithmetic number, because the mean of its divisors is an integer number (7022046196404).

Almost surely, 2^{28088168253287} is an apocalyptic number.

28088168253287 is a deficient number, since it is larger than the sum of its proper divisors (16532329).

28088168253287 is a wasteful number, since it uses less digits than its factorization.

28088168253287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16532328.

The product of its (nonzero) digits is 165150720, while the sum is 68.

The spelling of 28088168253287 in words is "twenty-eight trillion, eighty-eight billion, one hundred sixty-eight million, two hundred fifty-three thousand, two hundred eighty-seven".