26290213 has 2 divisors, whose sum is σ = 26290214. Its totient is φ = 26290212.

The previous prime is 26290193. The next prime is 26290217. The reversal of 26290213 is 31209262.

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., 18122049 + 8168164 = 4257^2 + 2858^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26290213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26290217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13145106 + 13145107.

It is an arithmetic number, because the mean of its divisors is an integer number (13145107).

Almost surely, 2^26290213 is an apocalyptic number.

It is an amenable number.

26290213 is a deficient number, since it is larger than the sum of its proper divisors (1).

26290213 is an equidigital number, since it uses as much as digits as its factorization.

26290213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 26290213 is about 5127.3982681278. The cubic root of 26290213 is about 297.3477808015.

Adding to 26290213 its reverse (31209262), we get a palindrome (57499475).

The spelling of 26290213 in words is "twenty-six million, two hundred ninety thousand, two hundred thirteen".