111473568 has 72 divisors (see below), whose sum is σ = 320638500. Its totient is φ = 36731904.

The previous prime is 111473567. The next prime is 111473569. The reversal of 111473568 is 865374111.

111473568 is a `hidden beast` number, since 11 + 14 + 73 + 568 = 666.

It is an interprime number because it is at equal distance from previous prime (111473567) and next prime (111473569).

It can be written as a sum of positive squares in 2 ways, for example, as 87385104 + 24088464 = 9348^2 + 4908^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (111473561) 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 11 ways as a sum of consecutive naturals, for example, 23458 + ... + 27806.

Almost surely, 2^111473568 is an apocalyptic number.

111473568 is a gapful number since it is divisible by the number (18) 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 111473568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160319250).

111473568 is an abundant number, since it is smaller than the sum of its proper divisors (209164932).

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

111473568 is a wasteful number, since it uses less digits than its factorization.

111473568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4454 (or 4443 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 111473568 is about 10558.1043753128. The cubic root of 111473568 is about 481.2720426627.

The spelling of 111473568 in words is "one hundred eleven million, four hundred seventy-three thousand, five hundred sixty-eight".