111798538 has 32 divisors (see below), whose sum is σ = 185328000. Its totient is φ = 50398656.

The previous prime is 111798523. The next prime is 111798539. The reversal of 111798538 is 835897111.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a junction number, because it is equal to n+sod(n) for n = 111798494 and 111798503.

It is not an unprimeable number, because it can be changed into a prime (111798539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56388 + ... + 58336.

It is an arithmetic number, because the mean of its divisors is an integer number (5791500).

Almost surely, 2^111798538 is an apocalyptic number.

111798538 is a deficient number, since it is larger than the sum of its proper divisors (73529462).

111798538 is a wasteful number, since it uses less digits than its factorization.

111798538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046.

The product of its digits is 60480, while the sum is 43.

The square root of 111798538 is about 10573.4827753205. The cubic root of 111798538 is about 481.7392602732.

The spelling of 111798538 in words is "one hundred eleven million, seven hundred ninety-eight thousand, five hundred thirty-eight".