28271539768 has 16 divisors (see below), whose sum is σ = 53680140000. Its totient is φ = 13956835776.

The previous prime is 28271539757. The next prime is 28271539831. The reversal of 28271539768 is 86793517282.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22366093 + ... + 22367356.

It is an arithmetic number, because the mean of its divisors is an integer number (3355008750).

Almost surely, 2^28271539768 is an apocalyptic number.

It is an amenable number.

28271539768 is a deficient number, since it is larger than the sum of its proper divisors (25408600232).

28271539768 is a wasteful number, since it uses less digits than its factorization.

28271539768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44733534 (or 44733530 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 58.

The spelling of 28271539768 in words is "twenty-eight billion, two hundred seventy-one million, five hundred thirty-nine thousand, seven hundred sixty-eight".