27397923 has 16 divisors (see below), whose sum is σ = 42721536. Its totient is φ = 15291360.

The previous prime is 27397901. The next prime is 27397933. The reversal of 27397923 is 32979372.

It is not a de Polignac number, because 27397923 - 2⁵ = 27397891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27397933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14268 + ... + 16073.

It is an arithmetic number, because the mean of its divisors is an integer number (2670096).

Almost surely, 2^27397923 is an apocalyptic number.

27397923 is a deficient number, since it is larger than the sum of its proper divisors (15323613).

27397923 is a wasteful number, since it uses less digits than its factorization.

27397923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30394.

The product of its digits is 142884, while the sum is 42.

The square root of 27397923 is about 5234.3025323342. The cubic root of 27397923 is about 301.4666074142.

The spelling of 27397923 in words is "twenty-seven million, three hundred ninety-seven thousand, nine hundred twenty-three".