28344018528 has 192 divisors, whose sum is σ = 96491243520. Its totient is φ = 7925907456.

The previous prime is 28344018509. The next prime is 28344018529. The reversal of 28344018528 is 82581044382.

28344018528 is a `hidden beast` number, since 2 + 8 + 3 + 440 + 185 + 28 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28344018529) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 234400 + ... + 334112.

It is an arithmetic number, because the mean of its divisors is an integer number (502558560).

Almost surely, 2^28344018528 is an apocalyptic number.

28344018528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28344018528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48245621760).

28344018528 is an abundant number, since it is smaller than the sum of its proper divisors (68147224992).

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

28344018528 is a wasteful number, since it uses less digits than its factorization.

28344018528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99786 (or 99772 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 45.

The spelling of 28344018528 in words is "twenty-eight billion, three hundred forty-four million, eighteen thousand, five hundred twenty-eight".