820280332 has 6 divisors (see below), whose sum is σ = 1435490588. Its totient is φ = 410140164.

The previous prime is 820280327. The next prime is 820280347. The reversal of 820280332 is 233082028.

It is a self number, because there is not a number n which added to its sum of digits gives 820280332.

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 as a sum of consecutive naturals, namely, 102535038 + ... + 102535045.

Almost surely, 2^820280332 is an apocalyptic number.

It is an amenable number.

820280332 is a deficient number, since it is larger than the sum of its proper divisors (615210256).

820280332 is a wasteful number, since it uses less digits than its factorization.

820280332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205070087 (or 205070085 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 820280332 is about 28640.5365173210. The cubic root of 820280332 is about 936.0968119479.

The spelling of 820280332 in words is "eight hundred twenty million, two hundred eighty thousand, three hundred thirty-two".