1286285 has 32 divisors (see below), whose sum is σ = 2080512. Its totient is φ = 737280.

The previous prime is 1286273. The next prime is 1286287. The reversal of 1286285 is 5826821.

It is not a de Polignac number, because 1286285 - 2⁴ = 1286269 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1286287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4877 + ... + 5133.

It is an arithmetic number, because the mean of its divisors is an integer number (65016).

2^1286285 is an apocalyptic number.

It is an amenable number.

1286285 is a deficient number, since it is larger than the sum of its proper divisors (794227).

1286285 is a wasteful number, since it uses less digits than its factorization.

1286285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293.

The product of its digits is 7680, while the sum is 32.

The square root of 1286285 is about 1134.1450524514. The cubic root of 1286285 is about 108.7541241225.

The spelling of 1286285 in words is "one million, two hundred eighty-six thousand, two hundred eighty-five".