12129628 has 12 divisors (see below), whose sum is σ = 24259312. Its totient is φ = 5198400.

The previous prime is 12129617. The next prime is 12129659. The reversal of 12129628 is 82692121.

12129628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

12129628 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 12129628.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216573 + ... + 216628.

Almost surely, 2^12129628 is an apocalyptic number.

It is an amenable number.

12129628 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12129628 is a wasteful number, since it uses less digits than its factorization.

12129628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433212 (or 433210 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

The square root of 12129628 is about 3482.7615479674. The cubic root of 12129628 is about 229.7642701373.

The spelling of 12129628 in words is "twelve million, one hundred twenty-nine thousand, six hundred twenty-eight".