1286828 has 6 divisors (see below), whose sum is σ = 2251956. Its totient is φ = 643412.

The previous prime is 1286821. The next prime is 1286833. The reversal of 1286828 is 8286821.

It is not an unprimeable number, because it can be changed into a prime (1286821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160850 + ... + 160857.

It is an arithmetic number, because the mean of its divisors is an integer number (375326).

2^1286828 is an apocalyptic number.

It is an amenable number.

1286828 is a deficient number, since it is larger than the sum of its proper divisors (965128).

1286828 is a wasteful number, since it uses less digits than its factorization.

1286828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321711 (or 321709 counting only the distinct ones).

The product of its digits is 12288, while the sum is 35.

The square root of 1286828 is about 1134.3844145615. The cubic root of 1286828 is about 108.7694253405.

The spelling of 1286828 in words is "one million, two hundred eighty-six thousand, eight hundred twenty-eight".