27728574212 has 12 divisors (see below), whose sum is σ = 48700187340. Its totient is φ = 13814234976.

The previous prime is 27728574197. The next prime is 27728574227. The reversal of 27728574212 is 21247582772.

It is an interprime number because it is at equal distance from previous prime (27728574197) and next prime (27728574227).

It can be written as a sum of positive squares in 2 ways, for example, as 7704626176 + 20023948036 = 87776^2 + 141506^2 .

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, 12511787 + ... + 12514002.

It is an arithmetic number, because the mean of its divisors is an integer number (4058348945).

Almost surely, 2^27728574212 is an apocalyptic number.

It is an amenable number.

27728574212 is a deficient number, since it is larger than the sum of its proper divisors (20971613128).

27728574212 is a wasteful number, since it uses less digits than its factorization.

27728574212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25026070 (or 25026068 counting only the distinct ones).

The product of its digits is 878080, while the sum is 47.

The spelling of 27728574212 in words is "twenty-seven billion, seven hundred twenty-eight million, five hundred seventy-four thousand, two hundred twelve".