26858281 has 2 divisors, whose sum is σ = 26858282. Its totient is φ = 26858280.

The previous prime is 26858269. The next prime is 26858287. The reversal of 26858281 is 18285862.

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., 17347225 + 9511056 = 4165^2 + 3084^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26858281 is a prime.

It is a super-2 number, since 2×26858281² = 1442734516549922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26858287) 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, 13429140 + 13429141.

It is an arithmetic number, because the mean of its divisors is an integer number (13429141).

Almost surely, 2^26858281 is an apocalyptic number.

It is an amenable number.

26858281 is a deficient number, since it is larger than the sum of its proper divisors (1).

26858281 is an equidigital number, since it uses as much as digits as its factorization.

26858281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61440, while the sum is 40.

The square root of 26858281 is about 5182.4975639165. The cubic root of 26858281 is about 299.4741937793.

The spelling of 26858281 in words is "twenty-six million, eight hundred fifty-eight thousand, two hundred eighty-one".