27240245 has 4 divisors (see below), whose sum is σ = 32688300. Its totient is φ = 21792192.

The previous prime is 27240233. The next prime is 27240259. The reversal of 27240245 is 54204272.

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 7187761 + 20052484 = 2681^2 + 4478^2 .

It is a cyclic number.

It is not a de Polignac number, because 27240245 - 2⁶ = 27240181 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, 2724020 + ... + 2724029.

It is an arithmetic number, because the mean of its divisors is an integer number (8172075).

Almost surely, 2^27240245 is an apocalyptic number.

It is an amenable number.

27240245 is a deficient number, since it is larger than the sum of its proper divisors (5448055).

27240245 is an equidigital number, since it uses as much as digits as its factorization.

27240245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5448054.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 27240245 is about 5219.2188112782. The cubic root of 27240245 is about 300.8871701406.

The spelling of 27240245 in words is "twenty-seven million, two hundred forty thousand, two hundred forty-five".