111343644 has 72 divisors (see below), whose sum is σ = 303881760. Its totient is φ = 34269312.

The previous prime is 111343643. The next prime is 111343649. The reversal of 111343644 is 446343111.

111343644 is a `hidden beast` number, since 1 + 1 + 13 + 4 + 3 + 644 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111343643) 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 23 ways as a sum of consecutive naturals, for example, 21694 + ... + 26330.

It is an arithmetic number, because the mean of its divisors is an integer number (4220580).

Almost surely, 2^111343644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111343644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151940880).

111343644 is an abundant number, since it is smaller than the sum of its proper divisors (192538116).

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

111343644 is a wasteful number, since it uses less digits than its factorization.

111343644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4699 (or 4694 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 111343644 is about 10551.9497724354. The cubic root of 111343644 is about 481.0849935459.

Adding to 111343644 its reverse (446343111), we get a palindrome (557686755).

The spelling of 111343644 in words is "one hundred eleven million, three hundred forty-three thousand, six hundred forty-four".