1286128 has 20 divisors (see below), whose sum is σ = 2573248. Its totient is φ = 622080.

The previous prime is 1286119. The next prime is 1286147. The reversal of 1286128 is 8216821.

1286128 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1286096 and 1286105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 801 + ... + 1792.

2^1286128 is an apocalyptic number.

It is an amenable number.

1286128 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1286128 is a wasteful number, since it uses less digits than its factorization.

1286128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632 (or 2626 counting only the distinct ones).

The product of its digits is 1536, while the sum is 28.

The square root of 1286128 is about 1134.0758352068. The cubic root of 1286128 is about 108.7496992109.

The spelling of 1286128 in words is "one million, two hundred eighty-six thousand, one hundred twenty-eight".