11440424 has 16 divisors (see below), whose sum is σ = 21491700. Its totient is φ = 5709312.

The previous prime is 11440417. The next prime is 11440441. The reversal of 11440424 is 42404411.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11437924 + 2500 = 3382^2 + 50^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11440396 and 11440405.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4664 + ... + 6680.

Almost surely, 2^11440424 is an apocalyptic number.

It is an amenable number.

11440424 is a deficient number, since it is larger than the sum of its proper divisors (10051276).

11440424 is a wasteful number, since it uses less digits than its factorization.

11440424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2732 (or 2728 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 11440424 is about 3382.3695835908. The cubic root of 11440424 is about 225.3274179634.

Adding to 11440424 its product of nonzero digits (512), we get a triangular number (11440936 = T₄₇₈₃).

Adding to 11440424 its reverse (42404411), we get a palindrome (53844835).

The spelling of 11440424 in words is "eleven million, four hundred forty thousand, four hundred twenty-four".