28871367844 has 24 divisors (see below), whose sum is σ = 58019018400. Its totient is φ = 12432646080.

The previous prime is 28871367841. The next prime is 28871367859. The reversal of 28871367844 is 44876317882.

It is not an unprimeable number, because it can be changed into a prime (28871367841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17266729 + ... + 17268400.

It is an arithmetic number, because the mean of its divisors is an integer number (2417459100).

Almost surely, 2^28871367844 is an apocalyptic number.

It is an amenable number.

28871367844 is an abundant number, since it is smaller than the sum of its proper divisors (29147650556).

28871367844 is a wasteful number, since it uses less digits than its factorization.

28871367844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34535163 (or 34535161 counting only the distinct ones).

The product of its digits is 14450688, while the sum is 58.

It can be divided in two parts, 2887 and 1367844, that added together give a palindrome (1370731).

The spelling of 28871367844 in words is "twenty-eight billion, eight hundred seventy-one million, three hundred sixty-seven thousand, eight hundred forty-four".