12412224 has 112 divisors (see below), whose sum is σ = 39867840. Its totient is φ = 3755520.

The previous prime is 12412199. The next prime is 12412237. The reversal of 12412224 is 42221421.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 12412197 and 12412206.

It is a congruent number.

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, 18682 + ... + 19334.

Almost surely, 2^12412224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12412224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19933920).

12412224 is an abundant number, since it is smaller than the sum of its proper divisors (27455616).

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

12412224 is a wasteful number, since it uses less digits than its factorization.

12412224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685 (or 669 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 12412224 is about 3523.0986361440. The cubic root of 12412224 is about 231.5349383676.

Adding to 12412224 its reverse (42221421), we get a palindrome (54633645).

The spelling of 12412224 in words is "twelve million, four hundred twelve thousand, two hundred twenty-four".