1028825 has 12 divisors (see below), whose sum is σ = 1458240. Its totient is φ = 705360.

The previous prime is 1028809. The next prime is 1028837. The reversal of 1028825 is 5288201.

It is not a de Polignac number, because 1028825 - 2⁴ = 1028809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1028794 and 1028803.

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 11 ways as a sum of consecutive naturals, for example, 2765 + ... + 3114.

It is an arithmetic number, because the mean of its divisors is an integer number (121520).

2^1028825 is an apocalyptic number.

It is an amenable number.

1028825 is a deficient number, since it is larger than the sum of its proper divisors (429415).

1028825 is an equidigital number, since it uses as much as digits as its factorization.

1028825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5896 (or 5891 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 1028825 is about 1014.3101103706. The cubic root of 1028825 is about 100.9517463845.

The spelling of 1028825 in words is "one million, twenty-eight thousand, eight hundred twenty-five".