23218226 has 16 divisors (see below), whose sum is σ = 36993024. Its totient is φ = 10891584.

The previous prime is 23218219. The next prime is 23218249. The reversal of 23218226 is 62281232.

It is a junction number, because it is equal to n+sod(n) for n = 23218195 and 23218204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12131 + ... + 13913.

It is an arithmetic number, because the mean of its divisors is an integer number (2312064).

Almost surely, 2^23218226 is an apocalyptic number.

23218226 is a deficient number, since it is larger than the sum of its proper divisors (13774798).

23218226 is a wasteful number, since it uses less digits than its factorization.

23218226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2185.

The product of its digits is 2304, while the sum is 26.

The square root of 23218226 is about 4818.5294437204. The cubic root of 23218226 is about 285.2832968398.

Adding to 23218226 its reverse (62281232), we get a palindrome (85499458).

The spelling of 23218226 in words is "twenty-three million, two hundred eighteen thousand, two hundred twenty-six".