111440864 has 24 divisors (see below), whose sum is σ = 224504280. Its totient is φ = 54423936.

The previous prime is 111440843. The next prime is 111440867. The reversal of 111440864 is 468044111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111440867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39119 + ... + 41870.

It is an arithmetic number, because the mean of its divisors is an integer number (9354345).

Almost surely, 2^111440864 is an apocalyptic number.

It is an amenable number.

111440864 is an abundant number, since it is smaller than the sum of its proper divisors (113063416).

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

111440864 is an equidigital number, since it uses as much as digits as its factorization.

111440864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81042 (or 81034 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 111440864 is about 10556.5554988358. Note that the first 3 decimals coincide. The cubic root of 111440864 is about 481.2249730281.

Adding to 111440864 its reverse (468044111), we get a palindrome (579484975).

The spelling of 111440864 in words is "one hundred eleven million, four hundred forty thousand, eight hundred sixty-four".