27728745052 has 12 divisors (see below), whose sum is σ = 48538171080. Its totient is φ = 13860696176.

The previous prime is 27728745049. The next prime is 27728745071. The reversal of 27728745052 is 25054782772.

It is a junction number, because it is equal to n+sod(n) for n = 27728744987 and 27728745005.

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, 902083 + ... + 932314.

It is an arithmetic number, because the mean of its divisors is an integer number (4044847590).

Almost surely, 2^27728745052 is an apocalyptic number.

It is an amenable number.

27728745052 is a deficient number, since it is larger than the sum of its proper divisors (20809426028).

27728745052 is a wasteful number, since it uses less digits than its factorization.

27728745052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838180 (or 1838178 counting only the distinct ones).

The product of its (nonzero) digits is 2195200, while the sum is 49.

The spelling of 27728745052 in words is "twenty-seven billion, seven hundred twenty-eight million, seven hundred forty-five thousand, fifty-two".