12489428 has 24 divisors (see below), whose sum is σ = 25166400. Its totient is φ = 5312448.

The previous prime is 12489427. The next prime is 12489443. The reversal of 12489428 is 82498421.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12489391 and 12489400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12489427) 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 7 ways as a sum of consecutive naturals, for example, 2288 + ... + 5496.

It is an arithmetic number, because the mean of its divisors is an integer number (1048600).

Almost surely, 2^12489428 is an apocalyptic number.

It is an amenable number.

12489428 is an abundant number, since it is smaller than the sum of its proper divisors (12676972).

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

12489428 is a wasteful number, since it uses less digits than its factorization.

12489428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3359 (or 3357 counting only the distinct ones).

The product of its digits is 36864, while the sum is 38.

The square root of 12489428 is about 3534.0384830955. The cubic root of 12489428 is about 232.0139953904.

The spelling of 12489428 in words is "twelve million, four hundred eighty-nine thousand, four hundred twenty-eight".