520434140 has 24 divisors (see below), whose sum is σ = 1095271632. Its totient is φ = 207724160.

The previous prime is 520434139. The next prime is 520434157. The reversal of 520434140 is 41434025.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18521 + ... + 37200.

It is an arithmetic number, because the mean of its divisors is an integer number (45636318).

Almost surely, 2^520434140 is an apocalyptic number.

It is an amenable number.

520434140 is an abundant number, since it is smaller than the sum of its proper divisors (574837492).

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

520434140 is a wasteful number, since it uses less digits than its factorization.

520434140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56197 (or 56195 counting only the distinct ones).

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

The square root of 520434140 is about 22813.0256651765. The cubic root of 520434140 is about 804.3688789391.

Adding to 520434140 its reverse (41434025), we get a palindrome (561868165).

The spelling of 520434140 in words is "five hundred twenty million, four hundred thirty-four thousand, one hundred forty".