27692891 has 4 divisors (see below), whose sum is σ = 27749784. Its totient is φ = 27636000.

The previous prime is 27692869. The next prime is 27692893. The reversal of 27692891 is 19829672.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27692891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27692893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27710 + ... + 28691.

It is an arithmetic number, because the mean of its divisors is an integer number (6937446).

Almost surely, 2^27692891 is an apocalyptic number.

27692891 is a deficient number, since it is larger than the sum of its proper divisors (56893).

27692891 is an equidigital number, since it uses as much as digits as its factorization.

27692891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56892.

The product of its digits is 108864, while the sum is 44.

The square root of 27692891 is about 5262.4035383083. The cubic root of 27692891 is about 302.5446183303.

The spelling of 27692891 in words is "twenty-seven million, six hundred ninety-two thousand, eight hundred ninety-one".