11115138 has 8 divisors (see below), whose sum is σ = 22230288. Its totient is φ = 3705044.

The previous prime is 11115131. The next prime is 11115163. The reversal of 11115138 is 83151111.

It is a happy number.

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

11115138 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (11115131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 926256 + ... + 926267.

It is an arithmetic number, because the mean of its divisors is an integer number (2778786).

Almost surely, 2^11115138 is an apocalyptic number.

11115138 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.

11115138 is a wasteful number, since it uses less digits than its factorization.

11115138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852528.

The product of its digits is 120, while the sum is 21.

The square root of 11115138 is about 3333.9373119481. The cubic root of 11115138 is about 223.1712707592.

Adding to 11115138 its reverse (83151111), we get a palindrome (94266249).

The spelling of 11115138 in words is "eleven million, one hundred fifteen thousand, one hundred thirty-eight".