18005230 has 32 divisors (see below), whose sum is σ = 34266240. Its totient is φ = 6800640.

The previous prime is 18005189. The next prime is 18005233. The reversal of 18005230 is 3250081.

It is a happy number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 18005198 and 18005207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18005233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12970 + ... + 14290.

It is an arithmetic number, because the mean of its divisors is an integer number (1070820).

Almost surely, 2^18005230 is an apocalyptic number.

18005230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18005230 is a deficient number, since it is larger than the sum of its proper divisors (16261010).

18005230 is a wasteful number, since it uses less digits than its factorization.

18005230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 18005230 is about 4243.2570037649. The cubic root of 18005230 is about 262.0995193287.

The spelling of 18005230 in words is "eighteen million, five thousand, two hundred thirty".