520297386 has 32 divisors (see below), whose sum is σ = 1213526400. Its totient is φ = 148655808.

The previous prime is 520297373. The next prime is 520297391. The reversal of 520297386 is 683792025.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 124351 + ... + 128466.

It is an arithmetic number, because the mean of its divisors is an integer number (37922700).

Almost surely, 2^520297386 is an apocalyptic number.

520297386 is an abundant number, since it is smaller than the sum of its proper divisors (693229014).

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

520297386 is a wasteful number, since it uses less digits than its factorization.

520297386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252843 (or 252829 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 520297386 is about 22810.0281893732. The cubic root of 520297386 is about 804.2984183438.

The spelling of 520297386 in words is "five hundred twenty million, two hundred ninety-seven thousand, three hundred eighty-six".