26828609 has 8 divisors (see below), whose sum is σ = 28109568. Its totient is φ = 25573680.

The previous prime is 26828569. The next prime is 26828617. The reversal of 26828609 is 90682862.

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 26828609 - 2¹² = 26824513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26828629) 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 7 ways as a sum of consecutive naturals, for example, 4382 + ... + 8535.

It is an arithmetic number, because the mean of its divisors is an integer number (3513696).

Almost surely, 2^26828609 is an apocalyptic number.

It is an amenable number.

26828609 is a deficient number, since it is larger than the sum of its proper divisors (1280959).

26828609 is a wasteful number, since it uses less digits than its factorization.

26828609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13015.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 26828609 is about 5179.6340604332. The cubic root of 26828609 is about 299.3638706032.

The spelling of 26828609 in words is "twenty-six million, eight hundred twenty-eight thousand, six hundred nine".