28804127087 has 4 divisors (see below), whose sum is σ = 28804474296. Its totient is φ = 28803779880.

The previous prime is 28804127081. The next prime is 28804127137. The reversal of 28804127087 is 78072140882.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28804127087 - 2¹⁶ = 28804061551 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 (28804127081) 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, 32012 + ... + 242142.

It is an arithmetic number, because the mean of its divisors is an integer number (7201118574).

Almost surely, 2^28804127087 is an apocalyptic number.

28804127087 is a deficient number, since it is larger than the sum of its proper divisors (347209).

28804127087 is a wasteful number, since it uses less digits than its factorization.

28804127087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347208.

The product of its (nonzero) digits is 401408, while the sum is 47.

The spelling of 28804127087 in words is "twenty-eight billion, eight hundred four million, one hundred twenty-seven thousand, eighty-seven".