1028530 has 16 divisors (see below), whose sum is σ = 1865664. Its totient is φ = 408240.

The previous prime is 1028509. The next prime is 1028557. The reversal of 1028530 is 358201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1028498 and 1028507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1315 + ... + 1945.

It is an arithmetic number, because the mean of its divisors is an integer number (116604).

2^1028530 is an apocalyptic number.

1028530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1028530 is a deficient number, since it is larger than the sum of its proper divisors (837134).

1028530 is a wasteful number, since it uses less digits than its factorization.

1028530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1028530 is about 1014.1646809074. The cubic root of 1028530 is about 100.9420966669.

The spelling of 1028530 in words is "one million, twenty-eight thousand, five hundred thirty".