27728760806 has 4 divisors (see below), whose sum is σ = 41593141212. Its totient is φ = 13864380402.

The previous prime is 27728760803. The next prime is 27728760863. The reversal of 27728760806 is 60806782772.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27728760803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6932190200 + ... + 6932190203.

It is an arithmetic number, because the mean of its divisors is an integer number (10398285303).

Almost surely, 2^27728760806 is an apocalyptic number.

27728760806 is a deficient number, since it is larger than the sum of its proper divisors (13864380406).

27728760806 is a wasteful number, since it uses less digits than its factorization.

27728760806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13864380405.

The product of its (nonzero) digits is 3161088, while the sum is 53.

The spelling of 27728760806 in words is "twenty-seven billion, seven hundred twenty-eight million, seven hundred sixty thousand, eight hundred six".