12244340 has 12 divisors (see below), whose sum is σ = 25713156. Its totient is φ = 4897728.

The previous prime is 12244333. The next prime is 12244343. The reversal of 12244340 is 4344221.

It can be written as a sum of positive squares in 2 ways, for example, as 2347024 + 9897316 = 1532^2 + 3146^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 612217 = 12244340 / (1 + 2 + 2 + 4 + 4 + 3 + 4 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12244343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306089 + ... + 306128.

It is an arithmetic number, because the mean of its divisors is an integer number (2142763).

Almost surely, 2^12244340 is an apocalyptic number.

12244340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12244340 is an abundant number, since it is smaller than the sum of its proper divisors (13468816).

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

12244340 is a wasteful number, since it uses less digits than its factorization.

12244340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612226 (or 612224 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 12244340 is about 3499.1913351516. The cubic root of 12244340 is about 230.4863056377.

Adding to 12244340 its reverse (4344221), we get a palindrome (16588561).

The spelling of 12244340 in words is "twelve million, two hundred forty-four thousand, three hundred forty".