820284528 has 40 divisors (see below), whose sum is σ = 2421793408. Its totient is φ = 234366912.

The previous prime is 820284523. The next prime is 820284533. The reversal of 820284528 is 825482028.

It is an interprime number because it is at equal distance from previous prime (820284523) and next prime (820284533).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820284523) 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, 1220326 + ... + 1220997.

Almost surely, 2^820284528 is an apocalyptic number.

It is an amenable number.

820284528 is an abundant number, since it is smaller than the sum of its proper divisors (1601508880).

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

820284528 is a wasteful number, since it uses less digits than its factorization.

820284528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2441341 (or 2441335 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 39.

The square root of 820284528 is about 28640.6097700451. The cubic root of 820284528 is about 936.0984080915.

The spelling of 820284528 in words is "eight hundred twenty million, two hundred eighty-four thousand, five hundred twenty-eight".