11317638 has 16 divisors (see below), whose sum is σ = 22736880. Its totient is φ = 3755616.

The previous prime is 11317577. The next prime is 11317651. The reversal of 11317638 is 83671311.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 2745 + ... + 5492.

It is an arithmetic number, because the mean of its divisors is an integer number (1421055).

Almost surely, 2^11317638 is an apocalyptic number.

11317638 is an abundant number, since it is smaller than the sum of its proper divisors (11419242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11317638 is a wasteful number, since it uses less digits than its factorization.

11317638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8471.

The product of its digits is 3024, while the sum is 30.

The square root of 11317638 is about 3364.1697341246. The cubic root of 11317638 is about 224.5183970453.

Adding to 11317638 its reverse (83671311), we get a palindrome (94988949).

The spelling of 11317638 in words is "eleven million, three hundred seventeen thousand, six hundred thirty-eight".