18226308 has 24 divisors (see below), whose sum is σ = 42663712. Its totient is φ = 6056064.

The previous prime is 18226279. The next prime is 18226309. The reversal of 18226308 is 80362281.

It is not an unprimeable number, because it can be changed into a prime (18226309) 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, 1791 + ... + 6297.

Almost surely, 2^18226308 is an apocalyptic number.

It is an amenable number.

18226308 is an abundant number, since it is smaller than the sum of its proper divisors (24437404).

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

18226308 is a wasteful number, since it uses less digits than its factorization.

18226308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4851 (or 4849 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 18226308 is about 4269.2280332632. The cubic root of 18226308 is about 263.1678919514.

Adding to 18226308 its reverse (80362281), we get a palindrome (98588589).

The spelling of 18226308 in words is "eighteen million, two hundred twenty-six thousand, three hundred eight".