27887245 has 4 divisors (see below), whose sum is σ = 33464700. Its totient is φ = 22309792.

The previous prime is 27887227. The next prime is 27887281. The reversal of 27887245 is 54278872.

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 5248681 + 22638564 = 2291^2 + 4758^2 .

It is a cyclic number.

It is not a de Polignac number, because 27887245 - 2¹⁹ = 27362957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2788720 + ... + 2788729.

It is an arithmetic number, because the mean of its divisors is an integer number (8366175).

Almost surely, 2^27887245 is an apocalyptic number.

It is an amenable number.

27887245 is a deficient number, since it is larger than the sum of its proper divisors (5577455).

27887245 is an equidigital number, since it uses as much as digits as its factorization.

27887245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5577454.

The product of its digits is 250880, while the sum is 43.

The square root of 27887245 is about 5280.8375282714. The cubic root of 27887245 is about 303.2507409748.

The spelling of 27887245 in words is "twenty-seven million, eight hundred eighty-seven thousand, two hundred forty-five".