12440275 has 12 divisors (see below), whose sum is σ = 15958800. Its totient is φ = 9608480.

The previous prime is 12440273. The next prime is 12440293. The reversal of 12440275 is 57204421.

It is not a de Polignac number, because 12440275 - 2¹ = 12440273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7855 + ... + 9304.

It is an arithmetic number, because the mean of its divisors is an integer number (1329900).

Almost surely, 2^12440275 is an apocalyptic number.

12440275 is a deficient number, since it is larger than the sum of its proper divisors (3518525).

12440275 is a wasteful number, since it uses less digits than its factorization.

12440275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17198 (or 17193 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 12440275 is about 3527.0774020427. The cubic root of 12440275 is about 231.7092262325.

Adding to 12440275 its reverse (57204421), we get a palindrome (69644696).

The spelling of 12440275 in words is "twelve million, four hundred forty thousand, two hundred seventy-five".