27531424 has 12 divisors (see below), whose sum is σ = 54202554. Its totient is φ = 13765696.

The previous prime is 27531407. The next prime is 27531431. The reversal of 27531424 is 42413572.

It can be written as a sum of positive squares in only one way, i.e., 27248400 + 283024 = 5220^2 + 532^2 .

It is a junction number, because it is equal to n+sod(n) for n = 27531392 and 27531401.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430147 + ... + 430210.

Almost surely, 2^27531424 is an apocalyptic number.

It is an amenable number.

27531424 is a deficient number, since it is larger than the sum of its proper divisors (26671130).

27531424 is an equidigital number, since it uses as much as digits as its factorization.

27531424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860367 (or 860359 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 27531424 is about 5247.0395462584. The cubic root of 27531424 is about 301.9554632217.

Adding to 27531424 its reverse (42413572), we get a palindrome (69944996).

The spelling of 27531424 in words is "twenty-seven million, five hundred thirty-one thousand, four hundred twenty-four".