11808005 has 8 divisors (see below), whose sum is σ = 15457824. Its totient is φ = 8587600.

The previous prime is 11807989. The next prime is 11808007. The reversal of 11808005 is 50080811.

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

It is not a de Polignac number, because 11808005 - 2⁴ = 11807989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11808007) 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, 107291 + ... + 107400.

It is an arithmetic number, because the mean of its divisors is an integer number (1932228).

Almost surely, 2^11808005 is an apocalyptic number.

It is an amenable number.

11808005 is a deficient number, since it is larger than the sum of its proper divisors (3649819).

11808005 is a wasteful number, since it uses less digits than its factorization.

11808005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214707.

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 11808005 is about 3436.2777827178. The cubic root of 11808005 is about 227.7152814639.

Adding to 11808005 its reverse (50080811), we get a palindrome (61888816).

The spelling of 11808005 in words is "eleven million, eight hundred eight thousand, five".