111520320 has 56 divisors (see below), whose sum is σ = 354080064. Its totient is φ = 29738496.

The previous prime is 111520319. The next prime is 111520327. The reversal of 111520320 is 23025111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 111520320.

It is not an unprimeable number, because it can be changed into a prime (111520327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57124 + ... + 59043.

Almost surely, 2^111520320 is an apocalyptic number.

111520320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111520320 is an abundant number, since it is smaller than the sum of its proper divisors (242559744).

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

111520320 is a wasteful number, since it uses less digits than its factorization.

111520320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116187 (or 116177 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 111520320 is about 10560.3181770248. The cubic root of 111520320 is about 481.3393150697.

Adding to 111520320 its reverse (23025111), we get a palindrome (134545431).

The spelling of 111520320 in words is "one hundred eleven million, five hundred twenty thousand, three hundred twenty".