28056211068 has 48 divisors (see below), whose sum is σ = 66154830336. Its totient is φ = 9253569600.

The previous prime is 28056211063. The next prime is 28056211109. The reversal of 28056211068 is 86011265082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28056211061) 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, 2154505 + ... + 2167487.

It is an arithmetic number, because the mean of its divisors is an integer number (1378225632).

Almost surely, 2^28056211068 is an apocalyptic number.

It is an amenable number.

28056211068 is an abundant number, since it is smaller than the sum of its proper divisors (38098619268).

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

28056211068 is a wasteful number, since it uses less digits than its factorization.

28056211068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14874 (or 14872 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The spelling of 28056211068 in words is "twenty-eight billion, fifty-six million, two hundred eleven thousand, sixty-eight".