111728394 has 12 divisors (see below), whose sum is σ = 242078226. Its totient is φ = 37242792.

The previous prime is 111728389. The next prime is 111728401. The reversal of 111728394 is 493827111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 102272769 + 9455625 = 10113^2 + 3075^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3103549 + ... + 3103584.

Almost surely, 2^111728394 is an apocalyptic number.

111728394 is an abundant number, since it is smaller than the sum of its proper divisors (130349832).

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

111728394 is a wasteful number, since it uses less digits than its factorization.

111728394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6207141 (or 6207138 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 111728394 is about 10570.1652777996. The cubic root of 111728394 is about 481.6384891637.

The spelling of 111728394 in words is "one hundred eleven million, seven hundred twenty-eight thousand, three hundred ninety-four".