520240220 has 24 divisors (see below), whose sum is σ = 1140005664. Its totient is φ = 199048256.

The previous prime is 520240211. The next prime is 520240223. The reversal of 520240220 is 22042025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520240223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565019 + ... + 565938.

It is an arithmetic number, because the mean of its divisors is an integer number (47500236).

Almost surely, 2^520240220 is an apocalyptic number.

It is an amenable number.

520240220 is an abundant number, since it is smaller than the sum of its proper divisors (619765444).

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

520240220 is a wasteful number, since it uses less digits than its factorization.

520240220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130989 (or 1130987 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 520240220 is about 22808.7750657505. The cubic root of 520240220 is about 804.2689606986.

Adding to 520240220 its reverse (22042025), we get a palindrome (542282245).

The spelling of 520240220 in words is "five hundred twenty million, two hundred forty thousand, two hundred twenty".