28996374528 has 312 divisors, whose sum is σ = 95374693440. Its totient is φ = 8402042880.

The previous prime is 28996374509. The next prime is 28996374593. The reversal of 28996374528 is 82547369982.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9325038 + ... + 9328146.

It is an arithmetic number, because the mean of its divisors is an integer number (305688120).

Almost surely, 2^28996374528 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 28996374528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47687346720).

28996374528 is an abundant number, since it is smaller than the sum of its proper divisors (66378318912).

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

28996374528 is a wasteful number, since it uses less digits than its factorization.

28996374528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3173 (or 3148 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 63.

The spelling of 28996374528 in words is "twenty-eight billion, nine hundred ninety-six million, three hundred seventy-four thousand, five hundred twenty-eight".