28187549468 has 48 divisors (see below), whose sum is σ = 54183517920. Its totient is φ = 12750376704.

The previous prime is 28187549437. The next prime is 28187549473. The reversal of 28187549468 is 86494578182.

It is a self number, because there is not a number n which added to its sum of digits gives 28187549468.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2803346 + ... + 2813382.

It is an arithmetic number, because the mean of its divisors is an integer number (1128823290).

Almost surely, 2^28187549468 is an apocalyptic number.

It is an amenable number.

28187549468 is a deficient number, since it is larger than the sum of its proper divisors (25995968452).

28187549468 is a wasteful number, since it uses less digits than its factorization.

28187549468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11126 (or 11124 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 62.

The spelling of 28187549468 in words is "twenty-eight billion, one hundred eighty-seven million, five hundred forty-nine thousand, four hundred sixty-eight".