520500402 has 48 divisors (see below), whose sum is σ = 1194516960. Its totient is φ = 163342656.

The previous prime is 520500341. The next prime is 520500443. The reversal of 520500402 is 204005025.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51078 + ... + 60414.

It is an arithmetic number, because the mean of its divisors is an integer number (24885770).

Almost surely, 2^520500402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520500402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (597258480).

520500402 is an abundant number, since it is smaller than the sum of its proper divisors (674016558).

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

520500402 is a wasteful number, since it uses less digits than its factorization.

520500402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9527 (or 9524 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 520500402 is about 22814.4779032964. The cubic root of 520500402 is about 804.4030150732.

Adding to 520500402 its reverse (204005025), we get a palindrome (724505427).

The spelling of 520500402 in words is "five hundred twenty million, five hundred thousand, four hundred two".