11218240 has 56 divisors (see below), whose sum is σ = 29151072. Its totient is φ = 4078080.

The previous prime is 11218231. The next prime is 11218241. The reversal of 11218240 is 4281211.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11218241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1927 + ... + 5113.

Almost surely, 2^11218240 is an apocalyptic number.

11218240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11218240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14575536).

11218240 is an abundant number, since it is smaller than the sum of its proper divisors (17932832).

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

11218240 is a wasteful number, since it uses less digits than its factorization.

11218240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215 (or 3205 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 11218240 is about 3349.3641187545. The cubic root of 11218240 is about 223.8591801983.

Adding to 11218240 its reverse (4281211), we get a palindrome (15499451).

The spelling of 11218240 in words is "eleven million, two hundred eighteen thousand, two hundred forty".