12440506 has 8 divisors (see below), whose sum is σ = 20096244. Its totient is φ = 5741760.

The previous prime is 12440489. The next prime is 12440513. The reversal of 12440506 is 60504421.

It can be written as a sum of positive squares in 2 ways, for example, as 12006225 + 434281 = 3465^2 + 659^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239215 + ... + 239266.

Almost surely, 2^12440506 is an apocalyptic number.

12440506 is a deficient number, since it is larger than the sum of its proper divisors (7655738).

12440506 is a wasteful number, since it uses less digits than its factorization.

12440506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478496.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 12440506 is about 3527.1101485494. The cubic root of 12440506 is about 231.7106604050.

Adding to 12440506 its reverse (60504421), we get a palindrome (72944927).

The spelling of 12440506 in words is "twelve million, four hundred forty thousand, five hundred six".