111876138 has 48 divisors (see below), whose sum is σ = 265356000. Its totient is φ = 33783840.

The previous prime is 111876137. The next prime is 111876157. The reversal of 111876138 is 831678111.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (111876137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68293 + ... + 69911.

It is an arithmetic number, because the mean of its divisors is an integer number (5528250).

Almost surely, 2^111876138 is an apocalyptic number.

111876138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 111876138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132678000).

111876138 is an abundant number, since it is smaller than the sum of its proper divisors (153479862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111876138 is a wasteful number, since it uses less digits than its factorization.

111876138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987 (or 1984 counting only the distinct ones).

The product of its digits is 8064, while the sum is 36.

The square root of 111876138 is about 10577.1516959908. The cubic root of 111876138 is about 481.8506938135.

The spelling of 111876138 in words is "one hundred eleven million, eight hundred seventy-six thousand, one hundred thirty-eight".