27691923 has 8 divisors (see below), whose sum is σ = 42197248. Its totient is φ = 15823944.

The previous prime is 27691919. The next prime is 27691927. The reversal of 27691923 is 32919672.

It is an interprime number because it is at equal distance from previous prime (27691919) and next prime (27691927).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27691923 - 2² = 27691919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27691927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 659311 + ... + 659352.

It is an arithmetic number, because the mean of its divisors is an integer number (5274656).

Almost surely, 2^27691923 is an apocalyptic number.

27691923 is a deficient number, since it is larger than the sum of its proper divisors (14505325).

27691923 is a wasteful number, since it uses less digits than its factorization.

27691923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318673.

The product of its digits is 40824, while the sum is 39.

The square root of 27691923 is about 5262.3115643223. The cubic root of 27691923 is about 302.5410931584.

The spelling of 27691923 in words is "twenty-seven million, six hundred ninety-one thousand, nine hundred twenty-three".