111866880 has 88 divisors (see below), whose sum is σ = 357848352. Its totient is φ = 29827072.

The previous prime is 111866861. The next prime is 111866897. The reversal of 111866880 is 88668111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11719 + ... + 19001.

Almost surely, 2^111866880 is an apocalyptic number.

111866880 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 111866880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178924176).

111866880 is an abundant number, since it is smaller than the sum of its proper divisors (245981472).

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

111866880 is an equidigital number, since it uses as much as digits as its factorization.

111866880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7311 (or 7293 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 39.

The square root of 111866880 is about 10576.7140454869. The cubic root of 111866880 is about 481.8374020403.

The spelling of 111866880 in words is "one hundred eleven million, eight hundred sixty-six thousand, eight hundred eighty".