111228144 has 40 divisors (see below), whose sum is σ = 304243920. Its totient is φ = 34894848.

The previous prime is 111228133. The next prime is 111228149. The reversal of 111228144 is 441822111.

It is a Harshad number since it is a multiple of its sum of digits (24).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111228149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67339 + ... + 68970.

It is an arithmetic number, because the mean of its divisors is an integer number (7606098).

Almost surely, 2^111228144 is an apocalyptic number.

It is an amenable number.

111228144 is an abundant number, since it is smaller than the sum of its proper divisors (193015776).

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

111228144 is a wasteful number, since it uses less digits than its factorization.

111228144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136337 (or 136331 counting only the distinct ones).

The product of its digits is 512, while the sum is 24.

The square root of 111228144 is about 10546.4754302089. The cubic root of 111228144 is about 480.9185881753.

The spelling of 111228144 in words is "one hundred eleven million, two hundred twenty-eight thousand, one hundred forty-four".