1028550 has 24 divisors (see below), whose sum is σ = 2551176. Its totient is φ = 274240.

The previous prime is 1028509. The next prime is 1028557. The reversal of 1028550 is 558201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3279 + ... + 3578.

It is an arithmetic number, because the mean of its divisors is an integer number (106299).

2^1028550 is an apocalyptic number.

1028550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1028550 is an abundant number, since it is smaller than the sum of its proper divisors (1522626).

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

1028550 is a wasteful number, since it uses less digits than its factorization.

1028550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6872 (or 6867 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1028550 is about 1014.1745411910. The cubic root of 1028550 is about 100.9427509433.

The spelling of 1028550 in words is "one million, twenty-eight thousand, five hundred fifty".