1028205 has 24 divisors (see below), whose sum is σ = 1812408. Its totient is φ = 539136.

The previous prime is 1028201. The next prime is 1028207. The reversal of 1028205 is 5028201.

It can be written as a sum of positive squares in 4 ways, for example, as 9 + 1028196 = 3^2 + 1014^2 .

It is not a de Polignac number, because 1028205 - 2² = 1028201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3129 + ... + 3441.

It is an arithmetic number, because the mean of its divisors is an integer number (75517).

2^1028205 is an apocalyptic number.

1028205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1028205 is a deficient number, since it is larger than the sum of its proper divisors (784203).

1028205 is a wasteful number, since it uses less digits than its factorization.

1028205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1028205 is about 1014.0044378601. The cubic root of 1028205 is about 100.9314634857.

The spelling of 1028205 in words is "one million, twenty-eight thousand, two hundred five".