18224338 has 8 divisors (see below), whose sum is σ = 29821680. Its totient is φ = 8283780.

The previous prime is 18224321. The next prime is 18224359. The reversal of 18224338 is 83342281.

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

It is a super-3 number, since 3×18224338³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414168 + ... + 414211.

It is an arithmetic number, because the mean of its divisors is an integer number (3727710).

Almost surely, 2^18224338 is an apocalyptic number.

18224338 is a deficient number, since it is larger than the sum of its proper divisors (11597342).

18224338 is a wasteful number, since it uses less digits than its factorization.

18224338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828392.

The product of its digits is 9216, while the sum is 31.

The square root of 18224338 is about 4268.9973061598. The cubic root of 18224338 is about 263.1584100636.

It can be divided in two parts, 182243 and 38, that added together give a palindrome (182281).

The spelling of 18224338 in words is "eighteen million, two hundred twenty-four thousand, three hundred thirty-eight".