12369428 has 18 divisors (see below), whose sum is σ = 22424766. Its totient is φ = 5969824.

The previous prime is 12369367. The next prime is 12369443. The reversal of 12369428 is 82496321.

It can be written as a sum of positive squares in 3 ways, for example, as 3678724 + 8690704 = 1918^2 + 2948^2 .

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1526 + ... + 5202.

Almost surely, 2^12369428 is an apocalyptic number.

It is an amenable number.

12369428 is a deficient number, since it is larger than the sum of its proper divisors (10055338).

12369428 is a wasteful number, since it uses less digits than its factorization.

12369428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3739 (or 3708 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 12369428 is about 3517.0197611046. The cubic root of 12369428 is about 231.2685295111.

The spelling of 12369428 in words is "twelve million, three hundred sixty-nine thousand, four hundred twenty-eight".