111243880 has 32 divisors (see below), whose sum is σ = 273054240. Its totient is φ = 40452160.

The previous prime is 111243871. The next prime is 111243883. The reversal of 111243880 is 88342111.

It is not an unprimeable number, because it can be changed into a prime (111243883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125974 + ... + 126853.

It is an arithmetic number, because the mean of its divisors is an integer number (8532945).

Almost surely, 2^111243880 is an apocalyptic number.

111243880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111243880 is an abundant number, since it is smaller than the sum of its proper divisors (161810360).

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

111243880 is a wasteful number, since it uses less digits than its factorization.

111243880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252849 (or 252845 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 111243880 is about 10547.2214350510. The cubic root of 111243880 is about 480.9412664226.

Adding to 111243880 its reverse (88342111), we get a palindrome (199585991).

The spelling of 111243880 in words is "one hundred eleven million, two hundred forty-three thousand, eight hundred eighty".