111860 has 48 divisors (see below), whose sum is σ = 290304. Its totient is φ = 35328.

The previous prime is 111857. The next prime is 111863. The reversal of 111860 is 68111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111857) and next prime (111863).

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2357 + ... + 2403.

It is an arithmetic number, because the mean of its divisors is an integer number (6048).

2¹¹¹⁸⁶⁰ is an apocalyptic number.

111860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145152).

111860 is an abundant number, since it is smaller than the sum of its proper divisors (178444).

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

111860 is a wasteful number, since it uses less digits than its factorization.

111860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 111860 is about 334.4547802020. The cubic root of 111860 is about 48.1827523903.

Adding to 111860 its reverse (68111), we get a palindrome (179971).

The spelling of 111860 in words is "one hundred eleven thousand, eight hundred sixty".