520534840 has 48 divisors (see below), whose sum is σ = 1362425400. Its totient is φ = 178468416.

The previous prime is 520534837. The next prime is 520534877. The reversal of 520534840 is 48435025.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130830 + ... + 134749.

Almost surely, 2^520534840 is an apocalyptic number.

It is an amenable number.

520534840 is an abundant number, since it is smaller than the sum of its proper divisors (841890560).

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

520534840 is a wasteful number, since it uses less digits than its factorization.

520534840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265604 (or 265593 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 520534840 is about 22815.2326308543. The cubic root of 520534840 is about 804.4207553222.

Adding to 520534840 its reverse (48435025), we get a palindrome (568969865).

The spelling of 520534840 in words is "five hundred twenty million, five hundred thirty-four thousand, eight hundred forty".