1280504 has 16 divisors (see below), whose sum is σ = 2437800. Its totient is φ = 630432.

The previous prime is 1280473. The next prime is 1280519. The reversal of 1280504 is 4050821.

It is a congruent number.

It is an unprimeable number.

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, 659 + ... + 1730.

2^1280504 is an apocalyptic number.

It is an amenable number.

1280504 is a deficient number, since it is larger than the sum of its proper divisors (1157296).

1280504 is a wasteful number, since it uses less digits than its factorization.

1280504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2462 (or 2458 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1280504 is about 1131.5935666130. The cubic root of 1280504 is about 108.5909534863.

The spelling of 1280504 in words is "one million, two hundred eighty thousand, five hundred four".