520402274 has 16 divisors (see below), whose sum is σ = 922881600. Its totient is φ = 215338704.

The previous prime is 520402273. The next prime is 520402321. The reversal of 520402274 is 472204025.

It is not an unprimeable number, because it can be changed into a prime (520402273) 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, 640484 + ... + 641295.

It is an arithmetic number, because the mean of its divisors is an integer number (57680100).

Almost surely, 2^520402274 is an apocalyptic number.

520402274 is a deficient number, since it is larger than the sum of its proper divisors (402479326).

520402274 is a wasteful number, since it uses less digits than its factorization.

520402274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281817.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 520402274 is about 22812.3272377020. The cubic root of 520402274 is about 804.3524615292.

Adding to 520402274 its reverse (472204025), we get a palindrome (992606299).

The spelling of 520402274 in words is "five hundred twenty million, four hundred two thousand, two hundred seventy-four".