111943440 has 360 divisors, whose sum is σ = 463095360. Its totient is φ = 24095232.

The previous prime is 111943439. The next prime is 111943457. The reversal of 111943440 is 44349111.

It is a tau number, because it is divible by the number of its divisors (360).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 670237 + ... + 670403.

It is an arithmetic number, because the mean of its divisors is an integer number (1286376).

Almost surely, 2^111943440 is an apocalyptic number.

111943440 is a gapful number since it is divisible by the number (10) 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 111943440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231547680).

111943440 is an abundant number, since it is smaller than the sum of its proper divisors (351151920).

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

111943440 is a wasteful number, since it uses less digits than its factorization.

111943440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 111943440 is about 10580.3326979826. The cubic root of 111943440 is about 481.9472977162.

The spelling of 111943440 in words is "one hundred eleven million, nine hundred forty-three thousand, four hundred forty".