18227306 has 8 divisors (see below), whose sum is σ = 27483204. Its totient is φ = 9066240.

The previous prime is 18227291. The next prime is 18227309. The reversal of 18227306 is 60372281.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16687225 + 1540081 = 4085^2 + 1241^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18227309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23225 + ... + 23996.

Almost surely, 2^18227306 is an apocalyptic number.

18227306 is a deficient number, since it is larger than the sum of its proper divisors (9255898).

18227306 is a wasteful number, since it uses less digits than its factorization.

18227306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47416.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 18227306 is about 4269.3449146210. The cubic root of 18227306 is about 263.1726952055.

Adding to 18227306 its reverse (60372281), we get a palindrome (78599587).

The spelling of 18227306 in words is "eighteen million, two hundred twenty-seven thousand, three hundred six".