111998868 has 48 divisors (see below), whose sum is σ = 274337280. Its totient is φ = 35494624.

The previous prime is 111998857. The next prime is 111998869. The reversal of 111998868 is 868899111.

It is a self number, because there is not a number n which added to its sum of digits gives 111998868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111998869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48271 + ... + 50537.

It is an arithmetic number, because the mean of its divisors is an integer number (5715360).

Almost surely, 2^111998868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111998868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137168640).

111998868 is an abundant number, since it is smaller than the sum of its proper divisors (162338412).

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

111998868 is a wasteful number, since it uses less digits than its factorization.

111998868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2476 (or 2474 counting only the distinct ones).

The product of its digits is 248832, while the sum is 51.

The square root of 111998868 is about 10582.9517621503. The cubic root of 111998868 is about 482.0268288528.

The spelling of 111998868 in words is "one hundred eleven million, nine hundred ninety-eight thousand, eight hundred sixty-eight".