520214240 has 96 divisors (see below), whose sum is σ = 1512665280. Its totient is φ = 164634624.

The previous prime is 520214171. The next prime is 520214251. The reversal of 520214240 is 42412025.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3305 + ... + 32424.

It is an arithmetic number, because the mean of its divisors is an integer number (15756930).

Almost surely, 2^520214240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520214240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (756332640).

520214240 is an abundant number, since it is smaller than the sum of its proper divisors (992451040).

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

520214240 is a wasteful number, since it uses less digits than its factorization.

520214240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35764 (or 35756 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 520214240 is about 22808.2055409890. The cubic root of 520214240 is about 804.2555724889.

Adding to 520214240 its reverse (42412025), we get a palindrome (562626265).

The spelling of 520214240 in words is "five hundred twenty million, two hundred fourteen thousand, two hundred forty".