12085428 has 12 divisors (see below), whose sum is σ = 28199360. Its totient is φ = 4028472.

The previous prime is 12085417. The next prime is 12085429. The reversal of 12085428 is 82458021.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 12085395 and 12085404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12085429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503548 + ... + 503571.

Almost surely, 2^12085428 is an apocalyptic number.

It is an amenable number.

12085428 is an abundant number, since it is smaller than the sum of its proper divisors (16113932).

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

12085428 is a wasteful number, since it uses less digits than its factorization.

12085428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007126 (or 1007124 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 12085428 is about 3476.4102174513. The cubic root of 12085428 is about 229.4848457582.

The spelling of 12085428 in words is "twelve million, eighty-five thousand, four hundred twenty-eight".