26402213 has 2 divisors, whose sum is σ = 26402214. Its totient is φ = 26402212.

The previous prime is 26402197. The next prime is 26402227. The reversal of 26402213 is 31220462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23990404 + 2411809 = 4898^2 + 1553^2 .

It is a cyclic number.

It is not a de Polignac number, because 26402213 - 2⁴ = 26402197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26402263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13201106 + 13201107.

It is an arithmetic number, because the mean of its divisors is an integer number (13201107).

Almost surely, 2^26402213 is an apocalyptic number.

It is an amenable number.

26402213 is a deficient number, since it is larger than the sum of its proper divisors (1).

26402213 is an equidigital number, since it uses as much as digits as its factorization.

26402213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 26402213 is about 5138.3083792237. The cubic root of 26402213 is about 297.7694303752.

Adding to 26402213 its reverse (31220462), we get a palindrome (57622675).

The spelling of 26402213 in words is "twenty-six million, four hundred two thousand, two hundred thirteen".