27328813 has 2 divisors, whose sum is σ = 27328814. Its totient is φ = 27328812.

The previous prime is 27328811. The next prime is 27328841. The reversal of 27328813 is 31882372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17330569 + 9998244 = 4163^2 + 3162^2 .

It is a cyclic number.

It is not a de Polignac number, because 27328813 - 2¹ = 27328811 is a prime.

Together with 27328811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27328811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13664406 + 13664407.

It is an arithmetic number, because the mean of its divisors is an integer number (13664407).

Almost surely, 2^27328813 is an apocalyptic number.

It is an amenable number.

27328813 is a deficient number, since it is larger than the sum of its proper divisors (1).

27328813 is an equidigital number, since it uses as much as digits as its factorization.

27328813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 34.

The square root of 27328813 is about 5227.6967203540. The cubic root of 27328813 is about 301.2129154375.

The spelling of 27328813 in words is "twenty-seven million, three hundred twenty-eight thousand, eight hundred thirteen".