28222861784 has 32 divisors (see below), whose sum is σ = 57006642000. Its totient is φ = 13021782912.

The previous prime is 28222861727. The next prime is 28222861811. The reversal of 28222861784 is 48716822282.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297302 + ... + 380570.

Almost surely, 2^28222861784 is an apocalyptic number.

It is an amenable number.

28222861784 is an abundant number, since it is smaller than the sum of its proper divisors (28783780216).

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

28222861784 is a wasteful number, since it uses less digits than its factorization.

28222861784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86547 (or 86543 counting only the distinct ones).

The product of its digits is 1376256, while the sum is 50.

The spelling of 28222861784 in words is "twenty-eight billion, two hundred twenty-two million, eight hundred sixty-one thousand, seven hundred eighty-four".