28122185862 has 48 divisors (see below), whose sum is σ = 62008390080. Its totient is φ = 9208599216.

The previous prime is 28122185857. The next prime is 28122185881. The reversal of 28122185862 is 26858122182.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1608733 + ... + 1626119.

It is an arithmetic number, because the mean of its divisors is an integer number (1291841460).

Almost surely, 2^28122185862 is an apocalyptic number.

28122185862 is an abundant number, since it is smaller than the sum of its proper divisors (33886204218).

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

28122185862 is a wasteful number, since it uses less digits than its factorization.

28122185862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18977 (or 18974 counting only the distinct ones).

The product of its digits is 245760, while the sum is 45.

The spelling of 28122185862 in words is "twenty-eight billion, one hundred twenty-two million, one hundred eighty-five thousand, eight hundred sixty-two".