11118240 has 144 divisors (see below), whose sum is σ = 43400448. Its totient is φ = 2539008.

The previous prime is 11118199. The next prime is 11118251. The reversal of 11118240 is 4281111.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9529 + ... + 10631.

It is an arithmetic number, because the mean of its divisors is an integer number (301392).

Almost surely, 2^11118240 is an apocalyptic number.

11118240 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 11118240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21700224).

11118240 is an abundant number, since it is smaller than the sum of its proper divisors (32282208).

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

11118240 is a wasteful number, since it uses less digits than its factorization.

11118240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131 (or 1120 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 11118240 is about 3334.4024952006. The cubic root of 11118240 is about 223.1920296225.

Adding to 11118240 its reverse (4281111), we get a palindrome (15399351).

The spelling of 11118240 in words is "eleven million, one hundred eighteen thousand, two hundred forty".