11440440 has 192 divisors, whose sum is σ = 42456960. Its totient is φ = 2747520.

The previous prime is 11440417. The next prime is 11440441. The reversal of 11440440 is 4404411.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11440441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 106867 + ... + 106973.

It is an arithmetic number, because the mean of its divisors is an integer number (221130).

Almost surely, 2^11440440 is an apocalyptic number.

11440440 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 11440440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21228480).

11440440 is an abundant number, since it is smaller than the sum of its proper divisors (31016520).

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

11440440 is a wasteful number, since it uses less digits than its factorization.

11440440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 11440440 is about 3382.3719487957. The cubic root of 11440440 is about 225.3275230072.

Adding to 11440440 its reverse (4404411), we get a palindrome (15844851).

It can be divided in two parts, 1 and 1440440, that added together give a palindrome (1440441).

The spelling of 11440440 in words is "eleven million, four hundred forty thousand, four hundred forty".