28871039531544 has 128 divisors (see below), whose sum is σ = 91138393175040. Its totient is φ = 7426091261952.

The previous prime is 28871039531501. The next prime is 28871039531557. The reversal of 28871039531544 is 44513593017882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219693169 + ... + 219824544.

It is an arithmetic number, because the mean of its divisors is an integer number (712018696680).

Almost surely, 2^{28871039531544} is an apocalyptic number.

28871039531544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28871039531544 is an abundant number, since it is smaller than the sum of its proper divisors (62267353643496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28871039531544 is a wasteful number, since it uses less digits than its factorization.

28871039531544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439517769 (or 439517765 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 60.

The spelling of 28871039531544 in words is "twenty-eight trillion, eight hundred seventy-one billion, thirty-nine million, five hundred thirty-one thousand, five hundred forty-four".