23218630 has 8 divisors (see below), whose sum is σ = 41793552. Its totient is φ = 9287448.

The previous prime is 23218619. The next prime is 23218631. The reversal of 23218630 is 3681232.

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

It is a junction number, because it is equal to n+sod(n) for n = 23218595 and 23218604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23218631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1160922 + ... + 1160941.

It is an arithmetic number, because the mean of its divisors is an integer number (5224194).

Almost surely, 2^23218630 is an apocalyptic number.

23218630 is a deficient number, since it is larger than the sum of its proper divisors (18574922).

23218630 is a wasteful number, since it uses less digits than its factorization.

23218630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2321870.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 23218630 is about 4818.5713650417. The cubic root of 23218630 is about 285.2849514851.

Adding to 23218630 its reverse (3681232), we get a palindrome (26899862).

The spelling of 23218630 in words is "twenty-three million, two hundred eighteen thousand, six hundred thirty".