111608728 has 32 divisors (see below), whose sum is σ = 260904960. Its totient is φ = 43483680.

The previous prime is 111608713. The next prime is 111608741. The reversal of 111608728 is 827806111.

It is a junction number, because it is equal to n+sod(n) for n = 111608693 and 111608702.

It is a congruent number.

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, 89976 + ... + 91207.

It is an arithmetic number, because the mean of its divisors is an integer number (8153280).

Almost surely, 2^111608728 is an apocalyptic number.

It is an amenable number.

111608728 is an abundant number, since it is smaller than the sum of its proper divisors (149296232).

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

111608728 is a wasteful number, since it uses less digits than its factorization.

111608728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181207 (or 181203 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 34.

The square root of 111608728 is about 10564.5032064930. The cubic root of 111608728 is about 481.4664757705.

The spelling of 111608728 in words is "one hundred eleven million, six hundred eight thousand, seven hundred twenty-eight".