1285788 has 24 divisors (see below), whose sum is σ = 3428992. Its totient is φ = 367344.

The previous prime is 1285777. The next prime is 1285789. The reversal of 1285788 is 8875821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7570 + ... + 7737.

2^1285788 is an apocalyptic number.

It is an amenable number.

1285788 is an abundant number, since it is smaller than the sum of its proper divisors (2143204).

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

1285788 is a wasteful number, since it uses less digits than its factorization.

1285788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15321 (or 15319 counting only the distinct ones).

The product of its digits is 35840, while the sum is 39.

The square root of 1285788 is about 1133.9259235065. The cubic root of 1285788 is about 108.7401153653.

The spelling of 1285788 in words is "one million, two hundred eighty-five thousand, seven hundred eighty-eight".