27758545828 has 24 divisors (see below), whose sum is σ = 52579756152. Its totient is φ = 12746598144.

The previous prime is 27758545819. The next prime is 27758545879. The reversal of 27758545828 is 82854585772.

It can be written as a sum of positive squares in 4 ways, for example, as 12823750564 + 14934795264 = 113242^2 + 122208^2 .

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, 1344625 + ... + 1365112.

It is an arithmetic number, because the mean of its divisors is an integer number (2190823173).

Almost surely, 2^27758545828 is an apocalyptic number.

It is an amenable number.

27758545828 is a deficient number, since it is larger than the sum of its proper divisors (24821210324).

27758545828 is a wasteful number, since it uses less digits than its factorization.

27758545828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2709951 (or 2709949 counting only the distinct ones).

The product of its digits is 50176000, while the sum is 61.

The spelling of 27758545828 in words is "twenty-seven billion, seven hundred fifty-eight million, five hundred forty-five thousand, eight hundred twenty-eight".