28018727836 has 24 divisors (see below), whose sum is σ = 53505760896. Its totient is φ = 12732103920.

The previous prime is 28018727831. The next prime is 28018727851. The reversal of 28018727836 is 63872781082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28018727831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64915 + ... + 245461.

It is an arithmetic number, because the mean of its divisors is an integer number (2229406704).

Almost surely, 2^28018727836 is an apocalyptic number.

It is an amenable number.

28018727836 is a deficient number, since it is larger than the sum of its proper divisors (25487033060).

28018727836 is a wasteful number, since it uses less digits than its factorization.

28018727836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184089 (or 184087 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 52.

The spelling of 28018727836 in words is "twenty-eight billion, eighteen million, seven hundred twenty-seven thousand, eight hundred thirty-six".