12428629 has 2 divisors, whose sum is σ = 12428630. Its totient is φ = 12428628.

The previous prime is 12428623. The next prime is 12428639. The reversal of 12428629 is 92682421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10712529 + 1716100 = 3273^2 + 1310^2 .

It is a cyclic number.

It is not a de Polignac number, because 12428629 - 2⁵ = 12428597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12428594 and 12428603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12428623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6214314 + 6214315.

It is an arithmetic number, because the mean of its divisors is an integer number (6214315).

Almost surely, 2^12428629 is an apocalyptic number.

It is an amenable number.

12428629 is a deficient number, since it is larger than the sum of its proper divisors (1).

12428629 is an equidigital number, since it uses as much as digits as its factorization.

12428629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 34.

The square root of 12428629 is about 3525.4260735406. The cubic root of 12428629 is about 231.6368985669.

The spelling of 12428629 in words is "twelve million, four hundred twenty-eight thousand, six hundred twenty-nine".