1285404 has 24 divisors (see below), whose sum is σ = 3176208. Its totient is φ = 403200.

The previous prime is 1285397. The next prime is 1285411. The reversal of 1285404 is 4045821.

It is an interprime number because it is at equal distance from previous prime (1285397) and next prime (1285411).

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 7 ways as a sum of consecutive naturals, for example, 2947 + ... + 3354.

It is an arithmetic number, because the mean of its divisors is an integer number (132342).

2^1285404 is an apocalyptic number.

It is an amenable number.

1285404 is an abundant number, since it is smaller than the sum of its proper divisors (1890804).

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

1285404 is a wasteful number, since it uses less digits than its factorization.

1285404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6325 (or 6323 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 1285404 is about 1133.7565876325. The cubic root of 1285404 is about 108.7292892255.

The spelling of 1285404 in words is "one million, two hundred eighty-five thousand, four hundred four".