111985808 has 20 divisors (see below), whose sum is σ = 236697648. Its totient is φ = 50902560.

The previous prime is 111985799. The next prime is 111985859. The reversal of 111985808 is 808589111.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317966 + ... + 318317.

Almost surely, 2^111985808 is an apocalyptic number.

It is an amenable number.

111985808 is an abundant number, since it is smaller than the sum of its proper divisors (124711840).

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

111985808 is a wasteful number, since it uses less digits than its factorization.

111985808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636302 (or 636296 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 41.

The square root of 111985808 is about 10582.3347140411. The cubic root of 111985808 is about 482.0080920113.

The spelling of 111985808 in words is "one hundred eleven million, nine hundred eighty-five thousand, eight hundred eight".