111987894 has 8 divisors (see below), whose sum is σ = 223975800. Its totient is φ = 37329296.

The previous prime is 111987871. The next prime is 111987907. The reversal of 111987894 is 498789111.

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

111987894 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9332319 + ... + 9332330.

It is an arithmetic number, because the mean of its divisors is an integer number (27996975).

Almost surely, 2^111987894 is an apocalyptic number.

111987894 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

111987894 is a wasteful number, since it uses less digits than its factorization.

111987894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18664654.

The product of its digits is 145152, while the sum is 48.

The square root of 111987894 is about 10582.4332740632. The cubic root of 111987894 is about 482.0110848389.

The spelling of 111987894 in words is "one hundred eleven million, nine hundred eighty-seven thousand, eight hundred ninety-four".