26404321 has 2 divisors, whose sum is σ = 26404322. Its totient is φ = 26404320.

The previous prime is 26404307. The next prime is 26404327. The reversal of 26404321 is 12340462.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19927296 + 6477025 = 4464^2 + 2545^2 .

It is a cyclic number.

It is not a de Polignac number, because 26404321 - 2⁵ = 26404289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26404292 and 26404301.

It is not a weakly prime, because it can be changed into another prime (26404327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13202160 + 13202161.

It is an arithmetic number, because the mean of its divisors is an integer number (13202161).

Almost surely, 2^26404321 is an apocalyptic number.

It is an amenable number.

26404321 is a deficient number, since it is larger than the sum of its proper divisors (1).

26404321 is an equidigital number, since it uses as much as digits as its factorization.

26404321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 26404321 is about 5138.5135010040. The cubic root of 26404321 is about 297.7773549793. Note that the first 3 decimals are identical.

Adding to 26404321 its reverse (12340462), we get a palindrome (38744783).

The spelling of 26404321 in words is "twenty-six million, four hundred four thousand, three hundred twenty-one".