11540440 has 32 divisors (see below), whose sum is σ = 26088480. Its totient is φ = 4594432.

The previous prime is 11540423. The next prime is 11540447. The reversal of 11540440 is 4404511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11540447) 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 7 ways as a sum of consecutive naturals, for example, 9972 + ... + 11068.

It is an arithmetic number, because the mean of its divisors is an integer number (815265).

Almost surely, 2^11540440 is an apocalyptic number.

11540440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11540440 is an abundant number, since it is smaller than the sum of its proper divisors (14548040).

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

11540440 is a wasteful number, since it uses less digits than its factorization.

11540440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371 (or 1367 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 11540440 is about 3397.1223116043. The cubic root of 11540440 is about 225.9821428447.

Adding to 11540440 its reverse (4404511), we get a palindrome (15944951).

The spelling of 11540440 in words is "eleven million, five hundred forty thousand, four hundred forty".