111472228 has 24 divisors (see below), whose sum is σ = 223199424. Its totient is φ = 47719200.

The previous prime is 111472219. The next prime is 111472243. The reversal of 111472228 is 822274111.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 111472196 and 111472205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31383 + ... + 34753.

It is an arithmetic number, because the mean of its divisors is an integer number (9299976).

Almost surely, 2^111472228 is an apocalyptic number.

It is an amenable number.

111472228 is an abundant number, since it is smaller than the sum of its proper divisors (111727196).

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

111472228 is a wasteful number, since it uses less digits than its factorization.

111472228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4563 (or 4561 counting only the distinct ones).

The product of its digits is 1792, while the sum is 28.

The square root of 111472228 is about 10558.0409167610. The cubic root of 111472228 is about 481.2701142321.

The spelling of 111472228 in words is "one hundred eleven million, four hundred seventy-two thousand, two hundred twenty-eight".