11331438 has 16 divisors (see below), whose sum is σ = 22726656. Its totient is φ = 3766520.

The previous prime is 11331389. The next prime is 11331473. The reversal of 11331438 is 83413311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168 + ... + 4763.

It is an arithmetic number, because the mean of its divisors is an integer number (1420416).

Almost surely, 2^11331438 is an apocalyptic number.

11331438 is an abundant number, since it is smaller than the sum of its proper divisors (11395218).

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

11331438 is a wasteful number, since it uses less digits than its factorization.

11331438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5319.

The product of its digits is 864, while the sum is 24.

The square root of 11331438 is about 3366.2201354041. The cubic root of 11331438 is about 224.6096144124.

Adding to 11331438 its reverse (83413311), we get a palindrome (94744749).

The spelling of 11331438 in words is "eleven million, three hundred thirty-one thousand, four hundred thirty-eight".