111196988 has 48 divisors (see below), whose sum is σ = 230053824. Its totient is φ = 46033920.

The previous prime is 111196979. The next prime is 111196997. The reversal of 111196988 is 889691111.

It is an interprime number because it is at equal distance from previous prime (111196979) and next prime (111196997).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187220 + ... + 187812.

It is an arithmetic number, because the mean of its divisors is an integer number (4792788).

Almost surely, 2^111196988 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 111196988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115026912).

111196988 is an abundant number, since it is smaller than the sum of its proper divisors (118856836).

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

111196988 is a wasteful number, since it uses less digits than its factorization.

111196988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822 (or 820 counting only the distinct ones).

The product of its digits is 31104, while the sum is 44.

The square root of 111196988 is about 10544.9982456139. The cubic root of 111196988 is about 480.8736807799.

The spelling of 111196988 in words is "one hundred eleven million, one hundred ninety-six thousand, nine hundred eighty-eight".