12223288 has 32 divisors (see below), whose sum is σ = 28575360. Its totient is φ = 4762080.

The previous prime is 12223273. The next prime is 12223303. The reversal of 12223288 is 88232221.

It is an interprime number because it is at equal distance from previous prime (12223273) and next prime (12223303).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9306 + ... + 10537.

It is an arithmetic number, because the mean of its divisors is an integer number (892980).

Almost surely, 2^12223288 is an apocalyptic number.

It is an amenable number.

12223288 is an abundant number, since it is smaller than the sum of its proper divisors (16352072).

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

12223288 is a wasteful number, since it uses less digits than its factorization.

12223288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19867 (or 19863 counting only the distinct ones).

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

The square root of 12223288 is about 3496.1819174637. The cubic root of 12223288 is about 230.3541362381.

The spelling of 12223288 in words is "twelve million, two hundred twenty-three thousand, two hundred eighty-eight".