26423109 has 12 divisors (see below), whose sum is σ = 38279436. Its totient is φ = 17563392.

The previous prime is 26423101. The next prime is 26423119. The reversal of 26423109 is 90132462.

26423109 is a `hidden beast` number, since 2 + 642 + 3 + 10 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20223009 + 6200100 = 4497^2 + 2490^2 .

It is not a de Polignac number, because 26423109 - 2³ = 26423101 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26423101) 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 in 11 ways as a sum of consecutive naturals, for example, 982 + ... + 7335.

It is an arithmetic number, because the mean of its divisors is an integer number (3189953).

Almost surely, 2^26423109 is an apocalyptic number.

It is an amenable number.

26423109 is a deficient number, since it is larger than the sum of its proper divisors (11856327).

26423109 is a wasteful number, since it uses less digits than its factorization.

26423109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8676 (or 8673 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 26423109 is about 5140.3413310791. The cubic root of 26423109 is about 297.8479660801.

The spelling of 26423109 in words is "twenty-six million, four hundred twenty-three thousand, one hundred nine".