12444420 has 48 divisors (see below), whose sum is σ = 34997760. Its totient is φ = 3303936.

The previous prime is 12444413. The next prime is 12444437. The reversal of 12444420 is 2444421.

12444420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25741 + ... + 26219.

It is an arithmetic number, because the mean of its divisors is an integer number (729120).

Almost surely, 2^12444420 is an apocalyptic number.

12444420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12444420 is an abundant number, since it is smaller than the sum of its proper divisors (22553340).

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

12444420 is a wasteful number, since it uses less digits than its factorization.

12444420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924 (or 922 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 12444420 is about 3527.6649500768. The cubic root of 12444420 is about 231.7349579277.

Adding to 12444420 its reverse (2444421), we get a palindrome (14888841).

Subtracting from 12444420 its reverse (2444421), we obtain a palindrome (9999999).

It can be divided in two parts, 124 and 44420, that added together give a palindrome (44544).

The spelling of 12444420 in words is "twelve million, four hundred forty-four thousand, four hundred twenty".