111401568 has 60 divisors (see below), whose sum is σ = 327636540. Its totient is φ = 37132992.

The previous prime is 111401539. The next prime is 111401599. The reversal of 111401568 is 865104111.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 18898 + ... + 24081.

It is an arithmetic number, because the mean of its divisors is an integer number (5460609).

Almost surely, 2^111401568 is an apocalyptic number.

111401568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

111401568 is an abundant number, since it is smaller than the sum of its proper divisors (216234972).

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

111401568 is an equidigital number, since it uses as much as digits as its factorization.

111401568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43001 (or 42984 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 111401568 is about 10554.6941215745. The cubic root of 111401568 is about 481.1684035945.

Adding to 111401568 its reverse (865104111), we get a palindrome (976505679).

The spelling of 111401568 in words is "one hundred eleven million, four hundred one thousand, five hundred sixty-eight".