12230440 has 16 divisors (see below), whose sum is σ = 27518580. Its totient is φ = 4892160.

The previous prime is 12230419. The next prime is 12230441. The reversal of 12230440 is 4403221.

It can be written as a sum of positive squares in 2 ways, for example, as 12096484 + 133956 = 3478^2 + 366^2 .

It is not an unprimeable number, because it can be changed into a prime (12230441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152841 + ... + 152920.

Almost surely, 2^12230440 is an apocalyptic number.

12230440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12230440 is an abundant number, since it is smaller than the sum of its proper divisors (15288140).

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

12230440 is a wasteful number, since it uses less digits than its factorization.

12230440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305772 (or 305768 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 12230440 is about 3497.2045979611. The cubic root of 12230440 is about 230.3990551820.

Adding to 12230440 its reverse (4403221), we get a palindrome (16633661).

The spelling of 12230440 in words is "twelve million, two hundred thirty thousand, four hundred forty".