27819729428 has 12 divisors (see below), whose sum is σ = 48688839360. Its totient is φ = 13908632472.

The previous prime is 27819729401. The next prime is 27819729433. The reversal of 27819729428 is 82492791872.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256298 + ... + 348321.

It is an arithmetic number, because the mean of its divisors is an integer number (4057403280).

Almost surely, 2^27819729428 is an apocalyptic number.

It is an amenable number.

27819729428 is a deficient number, since it is larger than the sum of its proper divisors (20869109932).

27819729428 is a wasteful number, since it uses less digits than its factorization.

27819729428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616126 (or 616124 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 59.

The spelling of 27819729428 in words is "twenty-seven billion, eight hundred nineteen million, seven hundred twenty-nine thousand, four hundred twenty-eight".