111638234 has 8 divisors (see below), whose sum is σ = 171351840. Its totient is φ = 54520956.

The previous prime is 111638227. The next prime is 111638239. The reversal of 111638234 is 432836111.

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

It is a junction number, because it is equal to n+sod(n) for n = 111638197 and 111638206.

It is not an unprimeable number, because it can be changed into a prime (111638239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648974 + ... + 649145.

It is an arithmetic number, because the mean of its divisors is an integer number (21418980).

Almost surely, 2^111638234 is an apocalyptic number.

111638234 is a deficient number, since it is larger than the sum of its proper divisors (59713606).

111638234 is a wasteful number, since it uses less digits than its factorization.

111638234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298164.

The product of its digits is 3456, while the sum is 29.

The square root of 111638234 is about 10565.8995830928. The cubic root of 111638234 is about 481.5089004637.

The spelling of 111638234 in words is "one hundred eleven million, six hundred thirty-eight thousand, two hundred thirty-four".