12224020 has 48 divisors (see below), whose sum is σ = 27473040. Its totient is φ = 4552704.

The previous prime is 12223987. The next prime is 12224021. The reversal of 12224020 is 2042221.

It can be written as a sum of positive squares in 8 ways, for example, as 636804 + 11587216 = 798^2 + 3404^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12224021) 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, 53266 + ... + 53494.

It is an arithmetic number, because the mean of its divisors is an integer number (572355).

Almost surely, 2^12224020 is an apocalyptic number.

12224020 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 12224020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13736520).

12224020 is an abundant number, since it is smaller than the sum of its proper divisors (15249020).

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

12224020 is a wasteful number, since it uses less digits than its factorization.

12224020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 12224020 is about 3496.2866015245. The cubic root of 12224020 is about 230.3587344515.

Adding to 12224020 its reverse (2042221), we get a palindrome (14266241).

It can be divided in two parts, 122 and 24020, that added together give a palindrome (24142).

The spelling of 12224020 in words is "twelve million, two hundred twenty-four thousand, twenty".