12530018 has 6 divisors (see below), whose sum is σ = 18802539. Its totient is φ = 6262506.

The previous prime is 12530017. The next prime is 12530027. The reversal of 12530018 is 81003521.

It can be written as a sum of positive squares in only one way, i.e., 6265009 + 6265009 = 2503^2 + 2503^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=2503.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12530017) 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 2 ways as a sum of consecutive naturals, for example, 3755 + ... + 6257.

Almost surely, 2^12530018 is an apocalyptic number.

12530018 is a deficient number, since it is larger than the sum of its proper divisors (6272521).

12530018 is an frugal number, since it uses more digits than its factorization.

12530018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5008 (or 2505 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 12530018 is about 3539.7765466199. The cubic root of 12530018 is about 232.2650681211.

Adding to 12530018 its reverse (81003521), we get a palindrome (93533539).

The spelling of 12530018 in words is "twelve million, five hundred thirty thousand, eighteen".