12404420 has 48 divisors (see below), whose sum is σ = 29973888. Its totient is φ = 4224000.

The previous prime is 12404419. The next prime is 12404423. The reversal of 12404420 is 2440421.

12404420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12404423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34964 + ... + 35316.

It is an arithmetic number, because the mean of its divisors is an integer number (624456).

Almost surely, 2^12404420 is an apocalyptic number.

12404420 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 12404420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14986944).

12404420 is an abundant number, since it is smaller than the sum of its proper divisors (17569468).

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

12404420 is a wasteful number, since it uses less digits than its factorization.

12404420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620 (or 618 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 12404420 is about 3521.9909142415. The cubic root of 12404420 is about 231.4864034857.

Adding to 12404420 its reverse (2440421), we get a palindrome (14844841).

The spelling of 12404420 in words is "twelve million, four hundred four thousand, four hundred twenty".