820258532 has 12 divisors (see below), whose sum is σ = 1451581740. Its totient is φ = 405520896.

The previous prime is 820258529. The next prime is 820258541. The reversal of 820258532 is 235852028.

It can be written as a sum of positive squares in 2 ways, for example, as 376903396 + 443355136 = 19414^2 + 21056^2 .

It is a junction number, because it is equal to n+sod(n) for n = 820258492 and 820258501.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1151693 + ... + 1152404.

It is an arithmetic number, because the mean of its divisors is an integer number (120965145).

Almost surely, 2^820258532 is an apocalyptic number.

It is an amenable number.

820258532 is a deficient number, since it is larger than the sum of its proper divisors (631323208).

820258532 is a wasteful number, since it uses less digits than its factorization.

820258532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2304190 (or 2304188 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 820258532 is about 28640.1559353297. The cubic root of 820258532 is about 936.0885192174.

The spelling of 820258532 in words is "eight hundred twenty million, two hundred fifty-eight thousand, five hundred thirty-two".