18814404 has 48 divisors (see below), whose sum is σ = 50935808. Its totient is φ = 5293728.

The previous prime is 18814339. The next prime is 18814423. The reversal of 18814404 is 40441881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3957 + ... + 7299.

Almost surely, 2^18814404 is an apocalyptic number.

18814404 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 18814404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25467904).

18814404 is an abundant number, since it is smaller than the sum of its proper divisors (32121404).

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

18814404 is a wasteful number, since it uses less digits than its factorization.

18814404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3424 (or 3422 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 18814404 is about 4337.5573771421. The cubic root of 18814404 is about 265.9684700789.

The spelling of 18814404 in words is "eighteen million, eight hundred fourteen thousand, four hundred four".