18229226 has 16 divisors (see below), whose sum is σ = 28715040. Its totient is φ = 8667120.

The previous prime is 18229217. The next prime is 18229229. The reversal of 18229226 is 62292281.

It is a junction number, because it is equal to n+sod(n) for n = 18229192 and 18229201.

It is not an unprimeable number, because it can be changed into a prime (18229229) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1541 + ... + 6231.

It is an arithmetic number, because the mean of its divisors is an integer number (1794690).

Almost surely, 2^18229226 is an apocalyptic number.

18229226 is a deficient number, since it is larger than the sum of its proper divisors (10485814).

18229226 is a wasteful number, since it uses less digits than its factorization.

18229226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4789.

The product of its digits is 6912, while the sum is 32.

The square root of 18229226 is about 4269.5697675527. The cubic root of 18229226 is about 263.1819354416.

The spelling of 18229226 in words is "eighteen million, two hundred twenty-nine thousand, two hundred twenty-six".