11808587 has 16 divisors (see below), whose sum is σ = 14008320. Its totient is φ = 9743328.

The previous prime is 11808583. The next prime is 11808607. The reversal of 11808587 is 78580811.

11808587 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11808587 - 2² = 11808583 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 11808587.

It is not an unprimeable number, because it can be changed into a prime (11808581) 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 15 ways as a sum of consecutive naturals, for example, 32714 + ... + 33072.

It is an arithmetic number, because the mean of its divisors is an integer number (875520).

Almost surely, 2^11808587 is an apocalyptic number.

11808587 is a deficient number, since it is larger than the sum of its proper divisors (2199733).

11808587 is a wasteful number, since it uses less digits than its factorization.

11808587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530.

The product of its (nonzero) digits is 17920, while the sum is 38.

The square root of 11808587 is about 3436.3624663298. The cubic root of 11808587 is about 227.7190226581.

The spelling of 11808587 in words is "eleven million, eight hundred eight thousand, five hundred eighty-seven".