28800821268887 has 4 divisors (see below), whose sum is σ = 28801962056256. Its totient is φ = 28799680481520.

The previous prime is 28800821268833. The next prime is 28800821268907. The reversal of 28800821268887 is 78886212800882.

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 28800821268887 - 2⁶ = 28800821268823 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 (28800821568887) 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, 570355814 + ... + 570406307.

It is an arithmetic number, because the mean of its divisors is an integer number (7200490514064).

Almost surely, 2^{28800821268887} is an apocalyptic number.

28800821268887 is a deficient number, since it is larger than the sum of its proper divisors (1140787369).

28800821268887 is a wasteful number, since it uses less digits than its factorization.

28800821268887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140787368.

The product of its (nonzero) digits is 88080384, while the sum is 68.

The spelling of 28800821268887 in words is "twenty-eight trillion, eight hundred billion, eight hundred twenty-one million, two hundred sixty-eight thousand, eight hundred eighty-seven".