11118540 has 24 divisors (see below), whose sum is σ = 31132080. Its totient is φ = 2964928.

The previous prime is 11118533. The next prime is 11118559. The reversal of 11118540 is 4581111.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92595 + ... + 92714.

It is an arithmetic number, because the mean of its divisors is an integer number (1297170).

Almost surely, 2^11118540 is an apocalyptic number.

11118540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11118540 is an abundant number, since it is smaller than the sum of its proper divisors (20013540).

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

11118540 is a wasteful number, since it uses less digits than its factorization.

11118540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185321 (or 185319 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 21.

The square root of 11118540 is about 3334.4474804681. The cubic root of 11118540 is about 223.1940370447.

Adding to 11118540 its reverse (4581111), we get a palindrome (15699651).

The spelling of 11118540 in words is "eleven million, one hundred eighteen thousand, five hundred forty".