1285304 has 8 divisors (see below), whose sum is σ = 2409960. Its totient is φ = 642648.

The previous prime is 1285301. The next prime is 1285351. The reversal of 1285304 is 4035821.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1285304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285301) by changing a digit.

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 as a sum of consecutive naturals, namely, 80324 + ... + 80339.

It is an arithmetic number, because the mean of its divisors is an integer number (301245).

2^1285304 is an apocalyptic number.

It is an amenable number.

1285304 is a deficient number, since it is larger than the sum of its proper divisors (1124656).

1285304 is a wasteful number, since it uses less digits than its factorization.

1285304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160669 (or 160665 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1285304 is about 1133.7124855976. The cubic root of 1285304 is about 108.7264695644.

The spelling of 1285304 in words is "one million, two hundred eighty-five thousand, three hundred four".