27028427 has 4 divisors (see below), whose sum is σ = 28203600. Its totient is φ = 25853256.

The previous prime is 27028423. The next prime is 27028447. The reversal of 27028427 is 72482072.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 27028427 - 2² = 27028423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27028393 and 27028402.

It is not an unprimeable number, because it can be changed into a prime (27028423) 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, 587552 + ... + 587597.

It is an arithmetic number, because the mean of its divisors is an integer number (7050900).

Almost surely, 2^27028427 is an apocalyptic number.

27028427 is a deficient number, since it is larger than the sum of its proper divisors (1175173).

27028427 is a wasteful number, since it uses less digits than its factorization.

27028427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175172.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 27028427 is about 5198.8870924458. The cubic root of 27028427 is about 300.1052482569.

The spelling of 27028427 in words is "twenty-seven million, twenty-eight thousand, four hundred twenty-seven".