12628529 has 4 divisors (see below), whose sum is σ = 12636276. Its totient is φ = 12620784.

The previous prime is 12628513. The next prime is 12628547. The reversal of 12628529 is 92582621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3508129 + 9120400 = 1873^2 + 3020^2 .

It is a cyclic number.

It is not a de Polignac number, because 12628529 - 2⁴ = 12628513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12628549) 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, 374 + ... + 5039.

It is an arithmetic number, because the mean of its divisors is an integer number (3159069).

Almost surely, 2^12628529 is an apocalyptic number.

It is an amenable number.

12628529 is a deficient number, since it is larger than the sum of its proper divisors (7747).

12628529 is an equidigital number, since it uses as much as digits as its factorization.

12628529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7746.

The product of its digits is 17280, while the sum is 35.

The square root of 12628529 is about 3553.6641653370. The cubic root of 12628529 is about 232.8721691928.

The spelling of 12628529 in words is "twelve million, six hundred twenty-eight thousand, five hundred twenty-nine".