26664438 has 16 divisors (see below), whose sum is σ = 53403696. Its totient is φ = 8875680.

The previous prime is 26664431. The next prime is 26664439. The reversal of 26664438 is 83446662.

It is a junction number, because it is equal to n+sod(n) for n = 26664396 and 26664405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26664431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2220 + ... + 7632.

It is an arithmetic number, because the mean of its divisors is an integer number (3337731).

Almost surely, 2^26664438 is an apocalyptic number.

26664438 is an abundant number, since it is smaller than the sum of its proper divisors (26739258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26664438 is a wasteful number, since it uses less digits than its factorization.

26664438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6239.

The product of its digits is 165888, while the sum is 39.

The square root of 26664438 is about 5163.7620007123. The cubic root of 26664438 is about 298.7519932408.

The spelling of 26664438 in words is "twenty-six million, six hundred sixty-four thousand, four hundred thirty-eight".