111340728 has 24 divisors (see below), whose sum is σ = 301548000. Its totient is φ = 37113552.

The previous prime is 111340721. The next prime is 111340751. The reversal of 111340728 is 827043111.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111340721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 773128 + ... + 773271.

It is an arithmetic number, because the mean of its divisors is an integer number (12564500).

Almost surely, 2^111340728 is an apocalyptic number.

111340728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

111340728 is an abundant number, since it is smaller than the sum of its proper divisors (190207272).

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

111340728 is a wasteful number, since it uses less digits than its factorization.

111340728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546411 (or 1546404 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 111340728 is about 10551.8115980148. The cubic root of 111340728 is about 481.0807937669.

Adding to 111340728 its reverse (827043111), we get a palindrome (938383839).

The spelling of 111340728 in words is "one hundred eleven million, three hundred forty thousand, seven hundred twenty-eight".