23218422 has 16 divisors (see below), whose sum is σ = 46632432. Its totient is φ = 7706880.

The previous prime is 23218397. The next prime is 23218427. The reversal of 23218422 is 22481232.

It is a junction number, because it is equal to n+sod(n) for n = 23218392 and 23218401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23218427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6583 + ... + 9474.

It is an arithmetic number, because the mean of its divisors is an integer number (2914527).

Almost surely, 2^23218422 is an apocalyptic number.

23218422 is an abundant number, since it is smaller than the sum of its proper divisors (23414010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23218422 is a wasteful number, since it uses less digits than its factorization.

23218422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16303.

The product of its digits is 1536, while the sum is 24.

The square root of 23218422 is about 4818.5497818327. The cubic root of 23218422 is about 285.2840995909.

Adding to 23218422 its reverse (22481232), we get a palindrome (45699654).

The spelling of 23218422 in words is "twenty-three million, two hundred eighteen thousand, four hundred twenty-two".