18034406 has 32 divisors (see below), whose sum is σ = 30185568. Its totient is φ = 8029440.

The previous prime is 18034403. The next prime is 18034421. The reversal of 18034406 is 60443081.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18034403) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 131570 + ... + 131706.

It is an arithmetic number, because the mean of its divisors is an integer number (943299).

Almost surely, 2^18034406 is an apocalyptic number.

18034406 is a deficient number, since it is larger than the sum of its proper divisors (12151162).

18034406 is a wasteful number, since it uses less digits than its factorization.

18034406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 18034406 is about 4246.6935373300. The cubic root of 18034406 is about 262.2410131953.

Adding to 18034406 its reverse (60443081), we get a palindrome (78477487).

The spelling of 18034406 in words is "eighteen million, thirty-four thousand, four hundred six".