11988587 has 12 divisors (see below), whose sum is σ = 13719216. Its totient is φ = 10412160.

The previous prime is 11988577. The next prime is 11988607. The reversal of 11988587 is 78588911.

11988587 is nontrivially palindromic in base 16.

It is not a de Polignac number, because 11988587 - 2¹⁴ = 11972203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11988517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2162 + ... + 5352.

It is an arithmetic number, because the mean of its divisors is an integer number (1143268).

Almost surely, 2^11988587 is an apocalyptic number.

11988587 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

11988587 is a deficient number, since it is larger than the sum of its proper divisors (1730629).

11988587 is a wasteful number, since it uses less digits than its factorization.

11988587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3238 (or 3221 counting only the distinct ones).

The product of its digits is 161280, while the sum is 47.

The square root of 11988587 is about 3462.4538986101. The cubic root of 11988587 is about 228.8702442457.

The spelling of 11988587 in words is "eleven million, nine hundred eighty-eight thousand, five hundred eighty-seven".