12262440 has 64 divisors (see below), whose sum is σ = 38957760. Its totient is φ = 3077120.

The previous prime is 12262433. The next prime is 12262463. The reversal of 12262440 is 4426221.

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 15 ways as a sum of consecutive naturals, for example, 966 + ... + 5045.

It is an arithmetic number, because the mean of its divisors is an integer number (608715).

Almost surely, 2^12262440 is an apocalyptic number.

12262440 is a gapful number since it is divisible by the number (10) 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 12262440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19478880).

12262440 is an abundant number, since it is smaller than the sum of its proper divisors (26695320).

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

12262440 is a wasteful number, since it uses less digits than its factorization.

12262440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6042 (or 6038 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 12262440 is about 3501.7766919094. The cubic root of 12262440 is about 230.5998206219.

Adding to 12262440 its reverse (4426221), we get a palindrome (16688661).

The spelling of 12262440 in words is "twelve million, two hundred sixty-two thousand, four hundred forty".