28016044800 has 432 divisors, whose sum is σ = 96072496800. Its totient is φ = 7184056320.

The previous prime is 28016044799. The next prime is 28016044813. The reversal of 28016044800 is 844061082.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 80275026 + ... + 80275374.

Almost surely, 2^28016044800 is an apocalyptic number.

28016044800 is a gapful number since it is divisible by the number (20) 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 28016044800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48036248400).

28016044800 is an abundant number, since it is smaller than the sum of its proper divisors (68056452000).

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

28016044800 is a wasteful number, since it uses less digits than its factorization.

28016044800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The spelling of 28016044800 in words is "twenty-eight billion, sixteen million, forty-four thousand, eight hundred".