27711983 has 4 divisors (see below), whose sum is σ = 29843688. Its totient is φ = 25580280.

The previous prime is 27711979. The next prime is 27711991. The reversal of 27711983 is 38911772.

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

It is a cyclic number.

It is not a de Polignac number, because 27711983 - 2² = 27711979 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27711953) by changing a digit.

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, 1065833 + ... + 1065858.

It is an arithmetic number, because the mean of its divisors is an integer number (7460922).

Almost surely, 2^27711983 is an apocalyptic number.

27711983 is a deficient number, since it is larger than the sum of its proper divisors (2131705).

27711983 is a wasteful number, since it uses less digits than its factorization.

27711983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131704.

The product of its digits is 21168, while the sum is 38.

The square root of 27711983 is about 5264.2172257611. The cubic root of 27711983 is about 302.6141290092.

The spelling of 27711983 in words is "twenty-seven million, seven hundred eleven thousand, nine hundred eighty-three".