11218404 has 48 divisors (see below), whose sum is σ = 27578880. Its totient is φ = 3544320.

The previous prime is 11218397. The next prime is 11218433. The reversal of 11218404 is 40481211.

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 15 ways as a sum of consecutive naturals, for example, 19432 + ... + 20000.

It is an arithmetic number, because the mean of its divisors is an integer number (574560).

Almost surely, 2^11218404 is an apocalyptic number.

It is an amenable number.

11218404 is an abundant number, since it is smaller than the sum of its proper divisors (16360476).

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

11218404 is a wasteful number, since it uses less digits than its factorization.

11218404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660 (or 658 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 11218404 is about 3349.3886009241. The cubic root of 11218404 is about 223.8602710624.

Adding to 11218404 its reverse (40481211), we get a palindrome (51699615).

The spelling of 11218404 in words is "eleven million, two hundred eighteen thousand, four hundred four".