28000050056 has 64 divisors (see below), whose sum is σ = 61323480000. Its totient is φ = 11843983360.

The previous prime is 28000050053. The next prime is 28000050097. The reversal of 28000050056 is 65005000082.

It is not an unprimeable number, because it can be changed into a prime (28000050053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27995 + ... + 238293.

It is an arithmetic number, because the mean of its divisors is an integer number (958179375).

Almost surely, 2^28000050056 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 28000050056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30661740000).

28000050056 is an abundant number, since it is smaller than the sum of its proper divisors (33323429944).

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

28000050056 is a wasteful number, since it uses less digits than its factorization.

28000050056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210422 (or 210418 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 28000050056 in words is "twenty-eight billion, fifty thousand, fifty-six".