11538243 has 12 divisors (see below), whose sum is σ = 16744000. Its totient is φ = 7656336.

The previous prime is 11538239. The next prime is 11538253. The reversal of 11538243 is 34283511.

It is a happy number.

It is not a de Polignac number, because 11538243 - 2² = 11538239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11538253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 868 + ... + 4881.

Almost surely, 2^11538243 is an apocalyptic number.

11538243 is a deficient number, since it is larger than the sum of its proper divisors (5205757).

11538243 is a wasteful number, since it uses less digits than its factorization.

11538243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5978 (or 5975 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 11538243 is about 3396.7989342909. The cubic root of 11538243 is about 225.9678015580.

It can be divided in two parts, 11538 and 243, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 11538243 in words is "eleven million, five hundred thirty-eight thousand, two hundred forty-three".