820328275 has 12 divisors (see below), whose sum is σ = 1095454192. Its totient is φ = 605780640.

The previous prime is 820328269. The next prime is 820328279. The reversal of 820328275 is 572823028.

It is not a de Polignac number, because 820328275 - 2⁹ = 820327763 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (820328279) 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, 1261719 + ... + 1262368.

Almost surely, 2^820328275 is an apocalyptic number.

820328275 is a deficient number, since it is larger than the sum of its proper divisors (275125917).

820328275 is a wasteful number, since it uses less digits than its factorization.

820328275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2524110 (or 2524105 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 820328275 is about 28641.3734831275. The cubic root of 820328275 is about 936.1150489714.

The spelling of 820328275 in words is "eight hundred twenty million, three hundred twenty-eight thousand, two hundred seventy-five".