12223040 has 28 divisors (see below), whose sum is σ = 29106876. Its totient is φ = 4889088.

The previous prime is 12223037. The next prime is 12223049. The reversal of 12223040 is 4032221.

It can be written as a sum of positive squares in 2 ways, for example, as 4293184 + 7929856 = 2072^2 + 2816^2 .

It is not an unprimeable number, because it can be changed into a prime (12223049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18779 + ... + 19418.

Almost surely, 2^12223040 is an apocalyptic number.

12223040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12223040 is an abundant number, since it is smaller than the sum of its proper divisors (16883836).

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

12223040 is an equidigital number, since it uses as much as digits as its factorization.

12223040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38214 (or 38204 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 12223040 is about 3496.1464500218. The cubic root of 12223040 is about 230.3525783318.

Adding to 12223040 its reverse (4032221), we get a palindrome (16255261).

The spelling of 12223040 in words is "twelve million, two hundred twenty-three thousand, forty".