27728630392 has 8 divisors (see below), whose sum is σ = 51991182000. Its totient is φ = 13864315192.

The previous prime is 27728630389. The next prime is 27728630407. The reversal of 27728630392 is 29303682772.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×27728630392² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1733039392 + ... + 1733039407.

It is an arithmetic number, because the mean of its divisors is an integer number (6498897750).

Almost surely, 2^27728630392 is an apocalyptic number.

It is an amenable number.

27728630392 is a deficient number, since it is larger than the sum of its proper divisors (24262551608).

27728630392 is a wasteful number, since it uses less digits than its factorization.

27728630392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3466078805 (or 3466078801 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 49.

The spelling of 27728630392 in words is "twenty-seven billion, seven hundred twenty-eight million, six hundred thirty thousand, three hundred ninety-two".