11123438 has 4 divisors (see below), whose sum is σ = 16685160. Its totient is φ = 5561718.

The previous prime is 11123393. The next prime is 11123471. The reversal of 11123438 is 83432111.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2780858 + ... + 2780861.

It is an arithmetic number, because the mean of its divisors is an integer number (4171290).

Almost surely, 2^11123438 is an apocalyptic number.

11123438 is a deficient number, since it is larger than the sum of its proper divisors (5561722).

11123438 is an equidigital number, since it uses as much as digits as its factorization.

11123438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5561721.

The product of its digits is 576, while the sum is 23.

The square root of 11123438 is about 3335.1818541123. The cubic root of 11123438 is about 223.2268064523.

Adding to 11123438 its reverse (83432111), we get a palindrome (94555549).

The spelling of 11123438 in words is "eleven million, one hundred twenty-three thousand, four hundred thirty-eight".