12530428 has 12 divisors (see below), whose sum is σ = 23218272. Its totient is φ = 5896640.

The previous prime is 12530393. The next prime is 12530429. The reversal of 12530428 is 82403521.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12530429) 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, 92068 + ... + 92203.

It is an arithmetic number, because the mean of its divisors is an integer number (1934856).

Almost surely, 2^12530428 is an apocalyptic number.

It is an amenable number.

12530428 is a deficient number, since it is larger than the sum of its proper divisors (10687844).

12530428 is a wasteful number, since it uses less digits than its factorization.

12530428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184292 (or 184290 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 12530428 is about 3539.8344594063. The cubic root of 12530428 is about 232.2676014412.

Adding to 12530428 its reverse (82403521), we get a palindrome (94933949).

The spelling of 12530428 in words is "twelve million, five hundred thirty thousand, four hundred twenty-eight".