27128393 has 2 divisors, whose sum is σ = 27128394. Its totient is φ = 27128392.

The previous prime is 27128389. The next prime is 27128401. The reversal of 27128393 is 39382172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25482304 + 1646089 = 5048^2 + 1283^2 .

It is a cyclic number.

It is not a de Polignac number, because 27128393 - 2² = 27128389 is a prime.

It is not a weakly prime, because it can be changed into another prime (27128323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13564196 + 13564197.

It is an arithmetic number, because the mean of its divisors is an integer number (13564197).

Almost surely, 2^27128393 is an apocalyptic number.

It is an amenable number.

27128393 is a deficient number, since it is larger than the sum of its proper divisors (1).

27128393 is an equidigital number, since it uses as much as digits as its factorization.

27128393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 27128393 is about 5208.4923922379. The cubic root of 27128393 is about 300.4747778532.

The spelling of 27128393 in words is "twenty-seven million, one hundred twenty-eight thousand, three hundred ninety-three".