111540080 has 20 divisors (see below), whose sum is σ = 259330872. Its totient is φ = 44616000.

The previous prime is 111540053. The next prime is 111540083. The reversal of 111540080 is 80045111.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111540083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 697046 + ... + 697205.

Almost surely, 2^111540080 is an apocalyptic number.

111540080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111540080 is an abundant number, since it is smaller than the sum of its proper divisors (147790792).

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

111540080 is a wasteful number, since it uses less digits than its factorization.

111540080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394264 (or 1394258 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 111540080 is about 10561.2537134566. The cubic root of 111540080 is about 481.3677424845.

Adding to 111540080 its reverse (80045111), we get a palindrome (191585191).

The spelling of 111540080 in words is "one hundred eleven million, five hundred forty thousand, eighty".