800004520 has 32 divisors (see below), whose sum is σ = 2057155200. Its totient is φ = 274287168.

The previous prime is 800004511. The next prime is 800004533. The reversal of 800004520 is 25400008.

It is a happy number.

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, 1428300 + ... + 1428859.

It is an arithmetic number, because the mean of its divisors is an integer number (64286100).

Almost surely, 2^800004520 is an apocalyptic number.

It is an amenable number.

800004520 is an abundant number, since it is smaller than the sum of its proper divisors (1257150680).

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

800004520 is a wasteful number, since it uses less digits than its factorization.

800004520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857177 (or 2857173 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 800004520 is about 28284.3511504153. The cubic root of 800004520 is about 928.3195150511.

Adding to 800004520 its reverse (25400008), we get a palindrome (825404528).

The spelling of 800004520 in words is "eight hundred million, four thousand, five hundred twenty".