28055042880 has 112 divisors (see below), whose sum is σ = 94314507840. Its totient is φ = 7041261568.

The previous prime is 28055042791. The next prime is 28055042893. The reversal of 28055042880 is 8824055082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 843210 + ... + 875849.

It is an arithmetic number, because the mean of its divisors is an integer number (842093820).

Almost surely, 2^28055042880 is an apocalyptic number.

28055042880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28055042880 is an abundant number, since it is smaller than the sum of its proper divisors (66259464960).

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

28055042880 is a wasteful number, since it uses less digits than its factorization.

28055042880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1719096 (or 1719086 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 42.

The spelling of 28055042880 in words is "twenty-eight billion, fifty-five million, forty-two thousand, eight hundred eighty".