111880560 has 80 divisors (see below), whose sum is σ = 378368640. Its totient is φ = 27121920.

The previous prime is 111880547. The next prime is 111880567. The reversal of 111880560 is 65088111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111880567) 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 15 ways as a sum of consecutive naturals, for example, 18550 + ... + 23829.

It is an arithmetic number, because the mean of its divisors is an integer number (4729608).

Almost surely, 2^111880560 is an apocalyptic number.

111880560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111880560 is an abundant number, since it is smaller than the sum of its proper divisors (266488080).

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

111880560 is a wasteful number, since it uses less digits than its factorization.

111880560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42406 (or 42400 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 30.

The square root of 111880560 is about 10577.3607294069. The cubic root of 111880560 is about 481.8570422501.

The spelling of 111880560 in words is "one hundred eleven million, eight hundred eighty thousand, five hundred sixty".