111242880 has 384 divisors, whose sum is σ = 458265600. Its totient is φ = 24330240.

The previous prime is 111242867. The next prime is 111242899. The reversal of 111242880 is 88242111.

It is a tau number, because it is divible by the number of its divisors (384).

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 47 ways as a sum of consecutive naturals, for example, 1249876 + ... + 1249964.

It is an arithmetic number, because the mean of its divisors is an integer number (1193400).

Almost surely, 2^111242880 is an apocalyptic number.

111242880 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 111242880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229132800).

111242880 is an abundant number, since it is smaller than the sum of its proper divisors (347022720).

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

111242880 is a wasteful number, since it uses less digits than its factorization.

111242880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 111242880 is about 10547.1740290942. The cubic root of 111242880 is about 480.9398253165.

Adding to 111242880 its reverse (88242111), we get a palindrome (199484991).

The spelling of 111242880 in words is "one hundred eleven million, two hundred forty-two thousand, eight hundred eighty".