18026205 has 32 divisors (see below), whose sum is σ = 30772224. Its totient is φ = 8979456.

The previous prime is 18026179. The next prime is 18026213. The reversal of 18026205 is 50262081.

It is not a de Polignac number, because 18026205 - 2¹⁰ = 18025181 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 56707 + ... + 57023.

It is an arithmetic number, because the mean of its divisors is an integer number (961632).

Almost surely, 2^18026205 is an apocalyptic number.

18026205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18026205 is a deficient number, since it is larger than the sum of its proper divisors (12746019).

18026205 is a wasteful number, since it uses less digits than its factorization.

18026205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 18026205 is about 4245.7278527951. The cubic root of 18026205 is about 262.2012565097.

Adding to 18026205 its reverse (50262081), we get a palindrome (68288286).

The spelling of 18026205 in words is "eighteen million, twenty-six thousand, two hundred five".