12530258 has 16 divisors (see below), whose sum is σ = 21432600. Its totient is φ = 5442816.

The previous prime is 12530257. The next prime is 12530263. The reversal of 12530258 is 85203521.

It can be written as a sum of positive squares in 4 ways, for example, as 6880129 + 5650129 = 2623^2 + 2377^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (12530251) 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 7 ways as a sum of consecutive naturals, for example, 13733 + ... + 14616.

Almost surely, 2^12530258 is an apocalyptic number.

12530258 is a deficient number, since it is larger than the sum of its proper divisors (8902342).

12530258 is a wasteful number, since it uses less digits than its factorization.

12530258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28381.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 12530258 is about 3539.8104469025. The cubic root of 12530258 is about 232.2665510469.

Adding to 12530258 its reverse (85203521), we get a palindrome (97733779).

The spelling of 12530258 in words is "twelve million, five hundred thirty thousand, two hundred fifty-eight".