26858213 has 2 divisors, whose sum is σ = 26858214. Its totient is φ = 26858212.

The previous prime is 26858207. The next prime is 26858243. The reversal of 26858213 is 31285862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19201924 + 7656289 = 4382^2 + 2767^2 .

It is a cyclic number.

It is not a de Polignac number, because 26858213 - 2⁶ = 26858149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26858203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13429106 + 13429107.

It is an arithmetic number, because the mean of its divisors is an integer number (13429107).

Almost surely, 2^26858213 is an apocalyptic number.

It is an amenable number.

26858213 is a deficient number, since it is larger than the sum of its proper divisors (1).

26858213 is an equidigital number, since it uses as much as digits as its factorization.

26858213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 35.

The square root of 26858213 is about 5182.4910033689. The cubic root of 26858213 is about 299.4739410421.

The spelling of 26858213 in words is "twenty-six million, eight hundred fifty-eight thousand, two hundred thirteen".