1286328 has 16 divisors (see below), whose sum is σ = 3215880. Its totient is φ = 428768.

The previous prime is 1286323. The next prime is 1286359. The reversal of 1286328 is 8236821.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1286295 and 1286304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1286323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26775 + ... + 26822.

2^1286328 is an apocalyptic number.

It is an amenable number.

1286328 is an abundant number, since it is smaller than the sum of its proper divisors (1929552).

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

1286328 is a wasteful number, since it uses less digits than its factorization.

1286328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53606 (or 53602 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 1286328 is about 1134.1640093038. The cubic root of 1286328 is about 108.7553359781.

The spelling of 1286328 in words is "one million, two hundred eighty-six thousand, three hundred twenty-eight".