1285888 has 18 divisors (see below), whose sum is σ = 2567264. Its totient is φ = 642816.

The previous prime is 1285877. The next prime is 1285891. The reversal of 1285888 is 8885821.

It is a self number, because there is not a number n which added to its sum of digits gives 1285888.

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, 2256 + ... + 2767.

2^1285888 is an apocalyptic number.

It is an amenable number.

1285888 is a deficient number, since it is larger than the sum of its proper divisors (1281376).

1285888 is an frugal number, since it uses more digits than its factorization.

1285888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5039 (or 5025 counting only the distinct ones).

The product of its digits is 40960, while the sum is 40.

The square root of 1285888 is about 1133.9700172403. The cubic root of 1285888 is about 108.7429343188.

The spelling of 1285888 in words is "one million, two hundred eighty-five thousand, eight hundred eighty-eight".