800500520 has 32 divisors (see below), whose sum is σ = 1802649600. Its totient is φ = 319929408.

The previous prime is 800500517. The next prime is 800500531. The reversal of 800500520 is 25005008.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 800500492 and 800500501.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43337 + ... + 58983.

It is an arithmetic number, because the mean of its divisors is an integer number (56332800).

Almost surely, 2^800500520 is an apocalyptic number.

It is an amenable number.

800500520 is an abundant number, since it is smaller than the sum of its proper divisors (1002149080).

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

800500520 is a wasteful number, since it uses less digits than its factorization.

800500520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16937 (or 16933 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 800500520 is about 28293.1178911056. The cubic root of 800500520 is about 928.5113270314.

Adding to 800500520 its reverse (25005008), we get a palindrome (825505528).

The spelling of 800500520 in words is "eight hundred million, five hundred thousand, five hundred twenty".