12440530 has 8 divisors (see below), whose sum is σ = 22392972. Its totient is φ = 4976208.

The previous prime is 12440521. The next prime is 12440537. The reversal of 12440530 is 3504421.

It can be written as a sum of positive squares in 2 ways, for example, as 12313081 + 127449 = 3509^2 + 357^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12440498 and 12440507.

It is not an unprimeable number, because it can be changed into a prime (12440537) 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, 622017 + ... + 622036.

Almost surely, 2^12440530 is an apocalyptic number.

12440530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12440530 is a deficient number, since it is larger than the sum of its proper divisors (9952442).

12440530 is a wasteful number, since it uses less digits than its factorization.

12440530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244060.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 12440530 is about 3527.1135507664. The cubic root of 12440530 is about 231.7108094089.

Adding to 12440530 its reverse (3504421), we get a palindrome (15944951).

The spelling of 12440530 in words is "twelve million, four hundred forty thousand, five hundred thirty".