111812608 has 28 divisors (see below), whose sum is σ = 223627950. Its totient is φ = 55902208.

The previous prime is 111812581. The next prime is 111812627. The reversal of 111812608 is 806218111.

It can be written as a sum of positive squares in only one way, i.e., 108826624 + 2985984 = 10432^2 + 1728^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1368 + ... + 15016.

Almost surely, 2^111812608 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 111812608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111813975).

111812608 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.

111812608 is an frugal number, since it uses more digits than its factorization.

111812608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13675 (or 13651 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 28.

The square root of 111812608 is about 10574.1480980739. The cubic root of 111812608 is about 481.7594686086.

The spelling of 111812608 in words is "one hundred eleven million, eight hundred twelve thousand, six hundred eight".