111728411 has 8 divisors (see below), whose sum is σ = 117620640. Its totient is φ = 105922432.

The previous prime is 111728401. The next prime is 111728429. The reversal of 111728411 is 114827111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111728411 - 2⁶ = 111728347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111728401) 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, 18896 + ... + 24093.

It is an arithmetic number, because the mean of its divisors is an integer number (14702580).

Almost surely, 2^111728411 is an apocalyptic number.

111728411 is a deficient number, since it is larger than the sum of its proper divisors (5892229).

111728411 is a wasteful number, since it uses less digits than its factorization.

111728411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43125.

The product of its digits is 448, while the sum is 26.

The square root of 111728411 is about 10570.1660819497. The cubic root of 111728411 is about 481.6385135915.

The spelling of 111728411 in words is "one hundred eleven million, seven hundred twenty-eight thousand, four hundred eleven".