11438440 has 32 divisors (see below), whose sum is σ = 27717480. Its totient is φ = 4223232.

The previous prime is 11438431. The next prime is 11438447. The reversal of 11438440 is 4483411.

It can be written as a sum of positive squares in 4 ways, for example, as 7986276 + 3452164 = 2826^2 + 1858^2 .

It is not an unprimeable number, because it can be changed into a prime (11438447) 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, 10479 + ... + 11518.

Almost surely, 2^11438440 is an apocalyptic number.

11438440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11438440 is an abundant number, since it is smaller than the sum of its proper divisors (16279040).

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

11438440 is a wasteful number, since it uses less digits than its factorization.

11438440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22021 (or 22017 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 11438440 is about 3382.0762853608. The cubic root of 11438440 is about 225.3143917725.

The spelling of 11438440 in words is "eleven million, four hundred thirty-eight thousand, four hundred forty".