520005234 has 64 divisors (see below), whose sum is σ = 1207084032. Its totient is φ = 146280000.

The previous prime is 520005223. The next prime is 520005259. The reversal of 520005234 is 432500025.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 520005234.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1127764 + ... + 1128224.

It is an arithmetic number, because the mean of its divisors is an integer number (18860688).

Almost surely, 2^520005234 is an apocalyptic number.

520005234 is an abundant number, since it is smaller than the sum of its proper divisors (687078798).

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

520005234 is a wasteful number, since it uses less digits than its factorization.

520005234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 520005234 is about 22803.6232647358. The cubic root of 520005234 is about 804.1478497188.

Adding to 520005234 its reverse (432500025), we get a palindrome (952505259).

The spelling of 520005234 in words is "five hundred twenty million, five thousand, two hundred thirty-four".