26638868 has 12 divisors (see below), whose sum is σ = 47257140. Its totient is φ = 13136832.

The previous prime is 26638841. The next prime is 26638891. The reversal of 26638868 is 86883662.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 23059204 + 3579664 = 4802^2 + 1892^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45323 + ... + 45906.

It is an arithmetic number, because the mean of its divisors is an integer number (3938095).

Almost surely, 2^26638868 is an apocalyptic number.

It is an amenable number.

26638868 is a deficient number, since it is larger than the sum of its proper divisors (20618272).

26638868 is a wasteful number, since it uses less digits than its factorization.

26638868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91306 (or 91304 counting only the distinct ones).

The product of its digits is 663552, while the sum is 47.

The square root of 26638868 is about 5161.2854987881. The cubic root of 26638868 is about 298.6564661119.

The spelling of 26638868 in words is "twenty-six million, six hundred thirty-eight thousand, eight hundred sixty-eight".