111540432 has 80 divisors (see below), whose sum is σ = 305123328. Its totient is φ = 35038080.

The previous prime is 111540427. The next prime is 111540433. The reversal of 111540432 is 234045111.

It is a junction number, because it is equal to n+sod(n) for n = 111540399 and 111540408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111540433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77673 + ... + 79095.

Almost surely, 2^111540432 is an apocalyptic number.

111540432 is a gapful number since it is divisible by the number (12) 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 111540432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152561664).

111540432 is an abundant number, since it is smaller than the sum of its proper divisors (193582896).

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

111540432 is a wasteful number, since it uses less digits than its factorization.

111540432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528 (or 1522 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 111540432 is about 10561.2703781316. The cubic root of 111540432 is about 481.3682488533.

Adding to 111540432 its reverse (234045111), we get a palindrome (345585543).

The spelling of 111540432 in words is "one hundred eleven million, five hundred forty thousand, four hundred thirty-two".