28218703086 has 48 divisors (see below), whose sum is σ = 71361598464. Its totient is φ = 7890942672.

The previous prime is 28218703069. The next prime is 28218703127. The reversal of 28218703086 is 68030781282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2376610 + ... + 2388453.

It is an arithmetic number, because the mean of its divisors is an integer number (1486699968).

Almost surely, 2^28218703086 is an apocalyptic number.

28218703086 is an abundant number, since it is smaller than the sum of its proper divisors (43142895378).

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

28218703086 is a wasteful number, since it uses less digits than its factorization.

28218703086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4765125 (or 4765122 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 28218703086 in words is "twenty-eight billion, two hundred eighteen million, seven hundred three thousand, eighty-six".