1028845 has 8 divisors (see below), whose sum is σ = 1243800. Its totient is φ = 816960.

The previous prime is 1028843. The next prime is 1028873. The reversal of 1028845 is 5488201.

It can be written as a sum of positive squares in 4 ways, for example, as 6724 + 1022121 = 82^2 + 1011^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1028845 - 2¹ = 1028843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55 + ... + 1435.

It is an arithmetic number, because the mean of its divisors is an integer number (155475).

2^1028845 is an apocalyptic number.

It is an amenable number.

1028845 is a deficient number, since it is larger than the sum of its proper divisors (214955).

1028845 is a wasteful number, since it uses less digits than its factorization.

1028845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535.

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 1028845 is about 1014.3199692405. The cubic root of 1028845 is about 100.9524005358.

The spelling of 1028845 in words is "one million, twenty-eight thousand, eight hundred forty-five".