12530639 has 12 divisors (see below), whose sum is σ = 14252280. Its totient is φ = 10995600.

The previous prime is 12530629. The next prime is 12530647. The reversal of 12530639 is 93603521.

It is a de Polignac number, because none of the positive numbers 2^k-12530639 is a prime.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12530629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1724 + ... + 5294.

It is an arithmetic number, because the mean of its divisors is an integer number (1187690).

Almost surely, 2^12530639 is an apocalyptic number.

12530639 is a deficient number, since it is larger than the sum of its proper divisors (1721641).

12530639 is a wasteful number, since it uses less digits than its factorization.

12530639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3622 (or 3611 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 12530639 is about 3539.8642629344. The cubic root of 12530639 is about 232.2689051526.

The spelling of 12530639 in words is "twelve million, five hundred thirty thousand, six hundred thirty-nine".