1285886 has 16 divisors (see below), whose sum is σ = 2247264. Its totient is φ = 540384.

The previous prime is 1285877. The next prime is 1285891. The reversal of 1285886 is 6885821.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125 + ... + 1608.

It is an arithmetic number, because the mean of its divisors is an integer number (140454).

2^1285886 is an apocalyptic number.

1285886 is a deficient number, since it is larger than the sum of its proper divisors (961378).

1285886 is a wasteful number, since it uses less digits than its factorization.

1285886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795.

The product of its digits is 30720, while the sum is 38.

The square root of 1285886 is about 1133.9691353824. The cubic root of 1285886 is about 108.7428779411.

The spelling of 1285886 in words is "one million, two hundred eighty-five thousand, eight hundred eighty-six".