11440240 has 80 divisors (see below), whose sum is σ = 31426560. Its totient is φ = 3790080.

The previous prime is 11440229. The next prime is 11440241. The reversal of 11440240 is 4204411.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11440241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17031 + ... + 17689.

It is an arithmetic number, because the mean of its divisors is an integer number (392832).

Almost surely, 2^11440240 is an apocalyptic number.

11440240 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 11440240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15713280).

11440240 is an abundant number, since it is smaller than the sum of its proper divisors (19986320).

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

11440240 is a wasteful number, since it uses less digits than its factorization.

11440240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710 (or 704 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 11440240 is about 3382.3423836152. The cubic root of 11440240 is about 225.3262099526.

Adding to 11440240 its reverse (4204411), we get a palindrome (15644651).

The spelling of 11440240 in words is "eleven million, four hundred forty thousand, two hundred forty".