11117838 has 8 divisors (see below), whose sum is σ = 22235688. Its totient is φ = 3705944.

The previous prime is 11117833. The next prime is 11117857. The reversal of 11117838 is 83871111.

It is a happy number.

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

11117838 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11117833) 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, 926481 + ... + 926492.

It is an arithmetic number, because the mean of its divisors is an integer number (2779461).

Almost surely, 2^11117838 is an apocalyptic number.

11117838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11117838 is a wasteful number, since it uses less digits than its factorization.

11117838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852978.

The product of its digits is 1344, while the sum is 30.

The square root of 11117838 is about 3334.3422139906. The cubic root of 11117838 is about 223.1893396201.

Adding to 11117838 its reverse (83871111), we get a palindrome (94988949).

The spelling of 11117838 in words is "eleven million, one hundred seventeen thousand, eight hundred thirty-eight".