27728702684764 has 24 divisors (see below), whose sum is σ = 49158528249600. Its totient is φ = 13683545007600.

The previous prime is 27728702684729. The next prime is 27728702684773. The reversal of 27728702684764 is 46748620782772.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 27728702684693 and 27728702684702.

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, 16197262 + ... + 17827189.

It is an arithmetic number, because the mean of its divisors is an integer number (2048272010400).

Almost surely, 2^{27728702684764} is an apocalyptic number.

It is an amenable number.

27728702684764 is a deficient number, since it is larger than the sum of its proper divisors (21429825564836).

27728702684764 is a wasteful number, since it uses less digits than its factorization.

27728702684764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34027113 (or 34027111 counting only the distinct ones).

The product of its (nonzero) digits is 708083712, while the sum is 70.

The spelling of 27728702684764 in words is "twenty-seven trillion, seven hundred twenty-eight billion, seven hundred two million, six hundred eighty-four thousand, seven hundred sixty-four".