26328391 has 2 divisors, whose sum is σ = 26328392. Its totient is φ = 26328390.

The previous prime is 26328373. The next prime is 26328397. The reversal of 26328391 is 19382362.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26328391 - 2⁹ = 26327879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26328397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13164195 + 13164196.

It is an arithmetic number, because the mean of its divisors is an integer number (13164196).

Almost surely, 2^26328391 is an apocalyptic number.

26328391 is a deficient number, since it is larger than the sum of its proper divisors (1).

26328391 is an equidigital number, since it uses as much as digits as its factorization.

26328391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 34.

The square root of 26328391 is about 5131.1198582766. The cubic root of 26328391 is about 297.4916448940.

The spelling of 26328391 in words is "twenty-six million, three hundred twenty-eight thousand, three hundred ninety-one".