28328086236 has 24 divisors (see below), whose sum is σ = 66203638144. Its totient is φ = 9427728240.

The previous prime is 28328086207. The next prime is 28328086247. The reversal of 28328086236 is 63268082382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1863010 + ... + 1878153.

Almost surely, 2^28328086236 is an apocalyptic number.

It is an amenable number.

28328086236 is an abundant number, since it is smaller than the sum of its proper divisors (37875551908).

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

28328086236 is a wasteful number, since it uses less digits than its factorization.

28328086236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3741801 (or 3741799 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 48.

The spelling of 28328086236 in words is "twenty-eight billion, three hundred twenty-eight million, eighty-six thousand, two hundred thirty-six".