12223872 has 112 divisors (see below), whose sum is σ = 36790380. Its totient is φ = 4043520.

The previous prime is 12223853. The next prime is 12223891. The reversal of 12223872 is 27832221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12223853) and next prime (12223891).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 93247 + ... + 93377.

Almost surely, 2^12223872 is an apocalyptic number.

12223872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12223872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18395190).

12223872 is an abundant number, since it is smaller than the sum of its proper divisors (24566508).

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

12223872 is an frugal number, since it uses more digits than its factorization.

12223872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 136 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 12223872 is about 3496.2654361475. The cubic root of 12223872 is about 230.3578047729.

The spelling of 12223872 in words is "twelve million, two hundred twenty-three thousand, eight hundred seventy-two".