27691424 has 12 divisors (see below), whose sum is σ = 54517554. Its totient is φ = 13845696.

The previous prime is 27691403. The next prime is 27691427. The reversal of 27691424 is 42419672.

It can be written as a sum of positive squares in only one way, i.e., 19963024 + 7728400 = 4468^2 + 2780^2 .

It is not an unprimeable number, because it can be changed into a prime (27691427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432647 + ... + 432710.

Almost surely, 2^27691424 is an apocalyptic number.

It is an amenable number.

27691424 is a deficient number, since it is larger than the sum of its proper divisors (26826130).

27691424 is an equidigital number, since it uses as much as digits as its factorization.

27691424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865367 (or 865359 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 27691424 is about 5262.2641514846. The cubic root of 27691424 is about 302.5392759148.

The spelling of 27691424 in words is "twenty-seven million, six hundred ninety-one thousand, four hundred twenty-four".