12440272 has 20 divisors (see below), whose sum is σ = 25957540. Its totient is φ = 5741568.

The previous prime is 12440249. The next prime is 12440273. The reversal of 12440272 is 27204421.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6270016 + 6170256 = 2504^2 + 2484^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29697 + ... + 30112.

It is an arithmetic number, because the mean of its divisors is an integer number (1297877).

Almost surely, 2^12440272 is an apocalyptic number.

It is an amenable number.

12440272 is an abundant number, since it is smaller than the sum of its proper divisors (13517268).

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

12440272 is a wasteful number, since it uses less digits than its factorization.

12440272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59830 (or 59824 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 12440272 is about 3527.0769767614. The cubic root of 12440272 is about 231.7092076068.

Adding to 12440272 its reverse (27204421), we get a palindrome (39644693).

The spelling of 12440272 in words is "twelve million, four hundred forty thousand, two hundred seventy-two".