1028784 has 20 divisors (see below), whose sum is σ = 2657816. Its totient is φ = 342912.

The previous prime is 1028777. The next prime is 1028803. The reversal of 1028784 is 4878201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10669 + ... + 10764.

2^1028784 is an apocalyptic number.

It is an amenable number.

1028784 is an abundant number, since it is smaller than the sum of its proper divisors (1629032).

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

1028784 is a wasteful number, since it uses less digits than its factorization.

1028784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21444 (or 21438 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 1028784 is about 1014.2898993877. The cubic root of 1028784 is about 100.9504053477.

The spelling of 1028784 in words is "one million, twenty-eight thousand, seven hundred eighty-four".