12440322 has 12 divisors (see below), whose sum is σ = 26954070. Its totient is φ = 4146768.

The previous prime is 12440317. The next prime is 12440339. The reversal of 12440322 is 22304421.

12440322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10949481 + 1490841 = 3309^2 + 1221^2 .

It is a super-2 number, since 2×12440322² = 309523222927368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 691129 = 12440322 / (1 + 2 + 4 + 4 + 0 + 3 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 12440295 and 12440304.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 345547 + ... + 345582.

Almost surely, 2^12440322 is an apocalyptic number.

12440322 is an abundant number, since it is smaller than the sum of its proper divisors (14513748).

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

12440322 is a wasteful number, since it uses less digits than its factorization.

12440322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691137 (or 691134 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 12440322 is about 3527.0840647765. The cubic root of 12440322 is about 231.7095180353.

Adding to 12440322 its reverse (22304421), we get a palindrome (34744743).

The spelling of 12440322 in words is "twelve million, four hundred forty thousand, three hundred twenty-two".