11218912 has 48 divisors (see below), whose sum is σ = 24004512. Its totient is φ = 5140480.

The previous prime is 11218903. The next prime is 11218943. The reversal of 11218912 is 21981211.

It is a congruent 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, 22053 + ... + 22555.

It is an arithmetic number, because the mean of its divisors is an integer number (500094).

Almost surely, 2^11218912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11218912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12002256).

11218912 is an abundant number, since it is smaller than the sum of its proper divisors (12785600).

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

11218912 is a wasteful number, since it uses less digits than its factorization.

11218912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571 (or 563 counting only the distinct ones).

The product of its digits is 288, while the sum is 25.

The square root of 11218912 is about 3349.4644348015. The cubic root of 11218912 is about 223.8636500131.

The spelling of 11218912 in words is "eleven million, two hundred eighteen thousand, nine hundred twelve".