111438144 has 42 divisors (see below), whose sum is σ = 319418970. Its totient is φ = 37145856.

The previous prime is 111438133. The next prime is 111438157. The reversal of 111438144 is 441834111.

It can be written as a sum of positive squares in only one way, i.e., 109998144 + 1440000 = 10488^2 + 1200^2 .

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 96159 + ... + 97310.

Almost surely, 2^111438144 is an apocalyptic number.

It is an amenable number.

111438144 is an abundant number, since it is smaller than the sum of its proper divisors (207980826).

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

111438144 is a wasteful number, since it uses less digits than its factorization.

111438144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193487 (or 193474 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 111438144 is about 10556.4266681486. The cubic root of 111438144 is about 481.2210578198.

The spelling of 111438144 in words is "one hundred eleven million, four hundred thirty-eight thousand, one hundred forty-four".