27430213 has 2 divisors, whose sum is σ = 27430214. Its totient is φ = 27430212.

The previous prime is 27430171. The next prime is 27430217. The reversal of 27430213 is 31203472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23357889 + 4072324 = 4833^2 + 2018^2 .

It is a cyclic number.

It is not a de Polignac number, because 27430213 - 2¹⁷ = 27299141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27430217) by changing a digit.

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 as a sum of consecutive naturals, namely, 13715106 + 13715107.

It is an arithmetic number, because the mean of its divisors is an integer number (13715107).

Almost surely, 2^27430213 is an apocalyptic number.

It is an amenable number.

27430213 is a deficient number, since it is larger than the sum of its proper divisors (1).

27430213 is an equidigital number, since it uses as much as digits as its factorization.

27430213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 27430213 is about 5237.3860846800. The cubic root of 27430213 is about 301.5849927275.

Adding to 27430213 its reverse (31203472), we get a palindrome (58633685).

The spelling of 27430213 in words is "twenty-seven million, four hundred thirty thousand, two hundred thirteen".