28216944000 has 1536 divisors, whose sum is σ = 127703347200. Its totient is φ = 6096384000.

The previous prime is 28216943929. The next prime is 28216944047. The reversal of 28216944000 is 44961282.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 656207979 + ... + 656208021.

It is an arithmetic number, because the mean of its divisors is an integer number (83140200).

Almost surely, 2^28216944000 is an apocalyptic number.

28216944000 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 28216944000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63851673600).

28216944000 is an abundant number, since it is smaller than the sum of its proper divisors (99486403200).

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

28216944000 is a wasteful number, since it uses less digits than its factorization.

28216944000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 28216944000 in words is "twenty-eight billion, two hundred sixteen million, nine hundred forty-four thousand".