26228857 has 2 divisors, whose sum is σ = 26228858. Its totient is φ = 26228856.

The previous prime is 26228849. The next prime is 26228861. The reversal of 26228857 is 75882262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22857961 + 3370896 = 4781^2 + 1836^2 .

It is a cyclic number.

It is not a de Polignac number, because 26228857 - 2³ = 26228849 is a prime.

It is not a weakly prime, because it can be changed into another prime (26228837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13114428 + 13114429.

It is an arithmetic number, because the mean of its divisors is an integer number (13114429).

Almost surely, 2^26228857 is an apocalyptic number.

It is an amenable number.

26228857 is a deficient number, since it is larger than the sum of its proper divisors (1).

26228857 is an equidigital number, since it uses as much as digits as its factorization.

26228857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 40.

The square root of 26228857 is about 5121.4116218090. The cubic root of 26228857 is about 297.1162842427.

The spelling of 26228857 in words is "twenty-six million, two hundred twenty-eight thousand, eight hundred fifty-seven".