28554344236 has 72 divisors (see below), whose sum is σ = 59254947360. Its totient is φ = 11985093120.

The previous prime is 28554344209. The next prime is 28554344239. The reversal of 28554344236 is 63244345582.

It is not an unprimeable number, because it can be changed into a prime (28554344239) 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, 403345 + ... + 468823.

It is an arithmetic number, because the mean of its divisors is an integer number (822985380).

Almost surely, 2^28554344236 is an apocalyptic number.

It is an amenable number.

28554344236 is an abundant number, since it is smaller than the sum of its proper divisors (30700603124).

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

28554344236 is a wasteful number, since it uses less digits than its factorization.

28554344236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65575 (or 65562 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 46.

The spelling of 28554344236 in words is "twenty-eight billion, five hundred fifty-four million, three hundred forty-four thousand, two hundred thirty-six".