12449428 has 6 divisors (see below), whose sum is σ = 21786506. Its totient is φ = 6224712.

The previous prime is 12449399. The next prime is 12449431. The reversal of 12449428 is 82494421.

It can be written as a sum of positive squares in only one way, i.e., 12404484 + 44944 = 3522^2 + 212^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12449393 and 12449402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1556175 + ... + 1556182.

Almost surely, 2^12449428 is an apocalyptic number.

It is an amenable number.

12449428 is a deficient number, since it is larger than the sum of its proper divisors (9337078).

12449428 is a wasteful number, since it uses less digits than its factorization.

12449428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3112361 (or 3112359 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 12449428 is about 3528.3746966557. The cubic root of 12449428 is about 231.7660394091.

The spelling of 12449428 in words is "twelve million, four hundred forty-nine thousand, four hundred twenty-eight".