520420604 has 12 divisors (see below), whose sum is σ = 993530328. Its totient is φ = 236554800.

The previous prime is 520420603. The next prime is 520420627. The reversal of 520420604 is 406024025.

It is a self number, because there is not a number n which added to its sum of digits gives 520420604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520420603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5913827 + ... + 5913914.

It is an arithmetic number, because the mean of its divisors is an integer number (82794194).

Almost surely, 2^520420604 is an apocalyptic number.

It is an amenable number.

520420604 is a deficient number, since it is larger than the sum of its proper divisors (473109724).

520420604 is a wasteful number, since it uses less digits than its factorization.

520420604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11827756 (or 11827754 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 520420604 is about 22812.7289906315. The cubic root of 520420604 is about 804.3619052539.

Adding to 520420604 its reverse (406024025), we get a palindrome (926444629).

It can be divided in two parts, 520 and 420604, that added together give a palindrome (421124).

The spelling of 520420604 in words is "five hundred twenty million, four hundred twenty thousand, six hundred four".