26104639 has 8 divisors (see below), whose sum is σ = 30153168. Its totient is φ = 22335360.

The previous prime is 26104627. The next prime is 26104643. The reversal of 26104639 is 93640162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26104639 - 2²³ = 17716031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26104639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26104439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69612 + ... + 69985.

It is an arithmetic number, because the mean of its divisors is an integer number (3769146).

Almost surely, 2^26104639 is an apocalyptic number.

26104639 is a deficient number, since it is larger than the sum of its proper divisors (4048529).

26104639 is a wasteful number, since it uses less digits than its factorization.

26104639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139625.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 26104639 is about 5109.2699087052. The cubic root of 26104639 is about 296.6465013156.

The spelling of 26104639 in words is "twenty-six million, one hundred four thousand, six hundred thirty-nine".