1028785 has 16 divisors (see below), whose sum is σ = 1302336. Its totient is φ = 779328.

The previous prime is 1028777. The next prime is 1028803. The reversal of 1028785 is 5878201.

It is a cyclic number.

It is not a de Polignac number, because 1028785 - 2³ = 1028777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12354 + ... + 12436.

It is an arithmetic number, because the mean of its divisors is an integer number (81396).

2^1028785 is an apocalyptic number.

It is an amenable number.

1028785 is a deficient number, since it is larger than the sum of its proper divisors (273551).

1028785 is an equidigital number, since it uses as much as digits as its factorization.

1028785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 1028785 is about 1014.2903923433. The cubic root of 1028785 is about 100.9504380563.

The spelling of 1028785 in words is "one million, twenty-eight thousand, seven hundred eighty-five".