500404020 has 48 divisors (see below), whose sum is σ = 1402386048. Its totient is φ = 133321600.

The previous prime is 500403991. The next prime is 500404033. The reversal of 500404020 is 20404005.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 78970 + ... + 85070.

It is an arithmetic number, because the mean of its divisors is an integer number (29216376).

Almost surely, 2^500404020 is an apocalyptic number.

It is an amenable number.

500404020 is an abundant number, since it is smaller than the sum of its proper divisors (901982028).

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

500404020 is a wasteful number, since it uses less digits than its factorization.

500404020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7480 (or 7478 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 500404020 is about 22369.7121125865. The cubic root of 500404020 is about 793.9142490199.

Subtracting from 500404020 its sum of digits (15), we obtain a palindrome (500404005).

Adding to 500404020 its reverse (20404005), we get a palindrome (520808025).

The spelling of 500404020 in words is "five hundred million, four hundred four thousand, twenty".