27427285 has 4 divisors (see below), whose sum is σ = 32912748. Its totient is φ = 21941824.

The previous prime is 27427261. The next prime is 27427291. The reversal of 27427285 is 58272472.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20277009 + 7150276 = 4503^2 + 2674^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27427285 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2742724 + ... + 2742733.

It is an arithmetic number, because the mean of its divisors is an integer number (8228187).

Almost surely, 2^27427285 is an apocalyptic number.

It is an amenable number.

27427285 is a deficient number, since it is larger than the sum of its proper divisors (5485463).

27427285 is an equidigital number, since it uses as much as digits as its factorization.

27427285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5485462.

The product of its digits is 62720, while the sum is 37.

The square root of 27427285 is about 5237.1065484674. The cubic root of 27427285 is about 301.5742615886.

The spelling of 27427285 in words is "twenty-seven million, four hundred twenty-seven thousand, two hundred eighty-five".