27490297 has 4 divisors (see below), whose sum is σ = 28233316. Its totient is φ = 26747280.

The previous prime is 27490291. The next prime is 27490303. The reversal of 27490297 is 79209472.

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

It is an interprime number because it is at equal distance from previous prime (27490291) and next prime (27490303).

It can be written as a sum of positive squares in 2 ways, for example, as 9308601 + 18181696 = 3051^2 + 4264^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27490297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27490291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371454 + ... + 371527.

It is an arithmetic number, because the mean of its divisors is an integer number (7058329).

Almost surely, 2^27490297 is an apocalyptic number.

It is an amenable number.

27490297 is a deficient number, since it is larger than the sum of its proper divisors (743019).

27490297 is an equidigital number, since it uses as much as digits as its factorization.

27490297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743018.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 27490297 is about 5243.1190144798. The cubic root of 27490297 is about 301.8050325580.

The spelling of 27490297 in words is "twenty-seven million, four hundred ninety thousand, two hundred ninety-seven".