11688388 has 6 divisors (see below), whose sum is σ = 20454686. Its totient is φ = 5844192.

The previous prime is 11688379. The next prime is 11688407. The reversal of 11688388 is 88388611.

It can be written as a sum of positive squares in only one way, i.e., 10291264 + 1397124 = 3208^2 + 1182^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1461045 + ... + 1461052.

Almost surely, 2^11688388 is an apocalyptic number.

It is an amenable number.

11688388 is a deficient number, since it is larger than the sum of its proper divisors (8766298).

11688388 is a wasteful number, since it uses less digits than its factorization.

11688388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2922101 (or 2922099 counting only the distinct ones).

The product of its digits is 73728, while the sum is 43.

The square root of 11688388 is about 3418.8284543100. The cubic root of 11688388 is about 226.9437394130.

The spelling of 11688388 in words is "eleven million, six hundred eighty-eight thousand, three hundred eighty-eight".