28556212764 has 48 divisors (see below), whose sum is σ = 69693603840. Its totient is φ = 9083215680.

The previous prime is 28556212693. The next prime is 28556212823. The reversal of 28556212764 is 46721265582.

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, 6684 + ... + 239075.

It is an arithmetic number, because the mean of its divisors is an integer number (1451950080).

Almost surely, 2^28556212764 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 28556212764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34846801920).

28556212764 is an abundant number, since it is smaller than the sum of its proper divisors (41137391076).

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

28556212764 is a wasteful number, since it uses less digits than its factorization.

28556212764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246210 (or 246208 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 48.

The spelling of 28556212764 in words is "twenty-eight billion, five hundred fifty-six million, two hundred twelve thousand, seven hundred sixty-four".