18104406 has 16 divisors (see below), whose sum is σ = 36254064. Its totient is φ = 6027264.

The previous prime is 18104389. The next prime is 18104407. The reversal of 18104406 is 60440181.

It is a super-2 number, since 2×18104406² = 655539033225672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18104407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5610 + ... + 8226.

It is an arithmetic number, because the mean of its divisors is an integer number (2265879).

Almost surely, 2^18104406 is an apocalyptic number.

18104406 is an abundant number, since it is smaller than the sum of its proper divisors (18149658).

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

18104406 is a wasteful number, since it uses less digits than its factorization.

18104406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3775.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 18104406 is about 4254.9272614229. The cubic root of 18104406 is about 262.5798686671.

Adding to 18104406 its reverse (60440181), we get a palindrome (78544587).

It can be divided in two parts, 1810 and 4406, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 18104406 in words is "eighteen million, one hundred four thousand, four hundred six".