28641550184 has 64 divisors (see below), whose sum is σ = 58213995840. Its totient is φ = 13132546560.

The previous prime is 28641550151. The next prime is 28641550199. The reversal of 28641550184 is 48105514682.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18805247 + ... + 18806769.

It is an arithmetic number, because the mean of its divisors is an integer number (909593685).

Almost surely, 2^28641550184 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28641550184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29106997920).

28641550184 is an abundant number, since it is smaller than the sum of its proper divisors (29572445656).

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

28641550184 is a wasteful number, since it uses less digits than its factorization.

28641550184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2610 (or 2606 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 44.

The spelling of 28641550184 in words is "twenty-eight billion, six hundred forty-one million, five hundred fifty thousand, one hundred eighty-four".