18114404 has 48 divisors (see below), whose sum is σ = 39975936. Its totient is φ = 6976800.

The previous prime is 18114403. The next prime is 18114407. The reversal of 18114404 is 40441181.

It is a self number, because there is not a number n which added to its sum of digits gives 18114404.

It is not an unprimeable number, because it can be changed into a prime (18114403) 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, 31439 + ... + 32009.

It is an arithmetic number, because the mean of its divisors is an integer number (832832).

Almost surely, 2^18114404 is an apocalyptic number.

18114404 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 18114404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19987968).

18114404 is an abundant number, since it is smaller than the sum of its proper divisors (21861532).

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

18114404 is a wasteful number, since it uses less digits than its factorization.

18114404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696 (or 694 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 18114404 is about 4256.1019724626. The cubic root of 18114404 is about 262.6281955847.

Adding to 18114404 its reverse (40441181), we get a palindrome (58555585).

The spelling of 18114404 in words is "eighteen million, one hundred fourteen thousand, four hundred four".