23218822 has 16 divisors (see below), whose sum is σ = 39647232. Its totient is φ = 10094920.

The previous prime is 23218813. The next prime is 23218829. The reversal of 23218822 is 22881232.

It is a super-2 number, since 2×23218822² = 1078227390135368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23218829) 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, 22438 + ... + 23449.

It is an arithmetic number, because the mean of its divisors is an integer number (2477952).

Almost surely, 2^23218822 is an apocalyptic number.

23218822 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

23218822 is a deficient number, since it is larger than the sum of its proper divisors (16428410).

23218822 is a wasteful number, since it uses less digits than its factorization.

23218822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45923.

The product of its digits is 3072, while the sum is 28.

The square root of 23218822 is about 4818.5912879181. The cubic root of 23218822 is about 285.2857378444.

The spelling of 23218822 in words is "twenty-three million, two hundred eighteen thousand, eight hundred twenty-two".