28016803928800 has 72 divisors (see below), whose sum is σ = 70754506187400. Its totient is φ = 10820282887680.

The previous prime is 28016803928791. The next prime is 28016803928803. The reversal of 28016803928800 is 882930861082.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28016803928803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 603787230 + ... + 603833629.

It is an arithmetic number, because the mean of its divisors is an integer number (982701474825).

Almost surely, 2^{28016803928800} is an apocalyptic number.

28016803928800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28016803928800 is an abundant number, since it is smaller than the sum of its proper divisors (42737702258600).

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

28016803928800 is a wasteful number, since it uses less digits than its factorization.

28016803928800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207620908 (or 1207620895 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 55.

The spelling of 28016803928800 in words is "twenty-eight trillion, sixteen billion, eight hundred three million, nine hundred twenty-eight thousand, eight hundred".