12049428 has 12 divisors (see below), whose sum is σ = 28115360. Its totient is φ = 4016472.

The previous prime is 12049423. The next prime is 12049451. The reversal of 12049428 is 82494021.

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 = 12049395 and 12049404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12049423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502048 + ... + 502071.

Almost surely, 2^12049428 is an apocalyptic number.

It is an amenable number.

12049428 is an abundant number, since it is smaller than the sum of its proper divisors (16065932).

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

12049428 is a wasteful number, since it uses less digits than its factorization.

12049428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004126 (or 1004124 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 12049428 is about 3471.2286009423. The cubic root of 12049428 is about 229.2567564398.

The spelling of 12049428 in words is "twelve million, forty-nine thousand, four hundred twenty-eight".