111438404 has 48 divisors (see below), whose sum is σ = 253725696. Its totient is φ = 41527200.

The previous prime is 111438391. The next prime is 111438407. The reversal of 111438404 is 404834111.

It is not an unprimeable number, because it can be changed into a prime (111438407) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 782 + ... + 14949.

It is an arithmetic number, because the mean of its divisors is an integer number (5285952).

Almost surely, 2^111438404 is an apocalyptic number.

111438404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111438404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126862848).

111438404 is an abundant number, since it is smaller than the sum of its proper divisors (142287292).

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

111438404 is a wasteful number, since it uses less digits than its factorization.

111438404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15776 (or 15774 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 111438404 is about 10556.4389829146. The cubic root of 111438404 is about 481.2214320704.

The spelling of 111438404 in words is "one hundred eleven million, four hundred thirty-eight thousand, four hundred four".