28441959907884 has 72 divisors (see below), whose sum is σ = 68212050555600. Its totient is φ = 9223694049024.

The previous prime is 28441959907883. The next prime is 28441959907903. The reversal of 28441959907884 is 48870995914482.

It is not an unprimeable number, because it can be changed into a prime (28441959907883) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 233167342 + ... + 233289290.

It is an arithmetic number, because the mean of its divisors is an integer number (947389591050).

Almost surely, 2^{28441959907884} is an apocalyptic number.

It is an amenable number.

28441959907884 is an abundant number, since it is smaller than the sum of its proper divisors (39770090647716).

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

28441959907884 is a wasteful number, since it uses less digits than its factorization.

28441959907884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136227 (or 136188 counting only the distinct ones).

The product of its (nonzero) digits is 1672151040, while the sum is 78.

The spelling of 28441959907884 in words is "twenty-eight trillion, four hundred forty-one billion, nine hundred fifty-nine million, nine hundred seven thousand, eight hundred eighty-four".