111838 has 8 divisors (see below), whose sum is σ = 169200. Its totient is φ = 55440.

The previous prime is 111833. The next prime is 111847. The reversal of 111838 is 838111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111833) 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 3 ways as a sum of consecutive naturals, for example, 258 + ... + 538.

It is an arithmetic number, because the mean of its divisors is an integer number (21150).

2¹¹¹⁸³⁸ is an apocalyptic number.

111838 is a deficient number, since it is larger than the sum of its proper divisors (57362).

111838 is a wasteful number, since it uses less digits than its factorization.

111838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482.

The product of its digits is 192, while the sum is 22.

The square root of 111838 is about 334.4218892357. The cubic root of 111838 is about 48.1795934116.

Adding to 111838 its reverse (838111), we get a palindrome (949949).

It can be divided in two parts, 1118 and 38, that added together give a square (1156 = 34²).

The spelling of 111838 in words is "one hundred eleven thousand, eight hundred thirty-eight".