520780256 has 24 divisors (see below), whose sum is σ = 1042667640. Its totient is φ = 255975808.

The previous prime is 520780229. The next prime is 520780277. The reversal of 520780256 is 652087025.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136031 + ... + 139806.

It is an arithmetic number, because the mean of its divisors is an integer number (43444485).

Almost surely, 2^520780256 is an apocalyptic number.

It is an amenable number.

520780256 is an abundant number, since it is smaller than the sum of its proper divisors (521887384).

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

520780256 is a wasteful number, since it uses less digits than its factorization.

520780256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275906 (or 275898 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 520780256 is about 22820.6103336436. The cubic root of 520780256 is about 804.5471552552.

The spelling of 520780256 in words is "five hundred twenty million, seven hundred eighty thousand, two hundred fifty-six".