11715638 has 8 divisors (see below), whose sum is σ = 19171080. Its totient is φ = 5325280.

The previous prime is 11715631. The next prime is 11715661. The reversal of 11715638 is 83651711.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11715631) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 266243 + ... + 266286.

It is an arithmetic number, because the mean of its divisors is an integer number (2396385).

Almost surely, 2^11715638 is an apocalyptic number.

11715638 is a deficient number, since it is larger than the sum of its proper divisors (7455442).

11715638 is a wasteful number, since it uses less digits than its factorization.

11715638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532542.

The product of its digits is 5040, while the sum is 32.

The square root of 11715638 is about 3422.8114175338. The cubic root of 11715638 is about 227.1199660865.

The spelling of 11715638 in words is "eleven million, seven hundred fifteen thousand, six hundred thirty-eight".