111828887 has 4 divisors (see below), whose sum is σ = 113938920. Its totient is φ = 109718856.

The previous prime is 111828881. The next prime is 111828923. The reversal of 111828887 is 788828111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111828887 - 2²⁶ = 44720023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111828881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1054937 + ... + 1055042.

It is an arithmetic number, because the mean of its divisors is an integer number (28484730).

Almost surely, 2^111828887 is an apocalyptic number.

111828887 is a deficient number, since it is larger than the sum of its proper divisors (2110033).

111828887 is an equidigital number, since it uses as much as digits as its factorization.

111828887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110032.

The product of its digits is 57344, while the sum is 44.

The square root of 111828887 is about 10574.9178247398. The cubic root of 111828887 is about 481.7828475518.

The spelling of 111828887 in words is "one hundred eleven million, eight hundred twenty-eight thousand, eight hundred eighty-seven".