111808404 has 24 divisors (see below), whose sum is σ = 289873920. Its totient is φ = 37269432.

The previous prime is 111808399. The next prime is 111808453. The reversal of 111808404 is 404808111.

It is a super-2 number, since 2×111808404² = 25002238410054432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517524 + ... + 517739.

It is an arithmetic number, because the mean of its divisors is an integer number (12078080).

Almost surely, 2^111808404 is an apocalyptic number.

It is an amenable number.

111808404 is an abundant number, since it is smaller than the sum of its proper divisors (178065516).

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

111808404 is a wasteful number, since it uses less digits than its factorization.

111808404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035276 (or 1035268 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 111808404 is about 10573.9493095059. The cubic root of 111808404 is about 481.7534307022.

The spelling of 111808404 in words is "one hundred eleven million, eight hundred eight thousand, four hundred four".