520779380 has 24 divisors (see below), whose sum is σ = 1193058720. Its totient is φ = 189374240.

The previous prime is 520779373. The next prime is 520779397. The reversal of 520779380 is 83977025.

It is a super-2 number, since 2×520779380² = 542422325266368800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1183370 + ... + 1183809.

It is an arithmetic number, because the mean of its divisors is an integer number (49710780).

Almost surely, 2^520779380 is an apocalyptic number.

It is an amenable number.

520779380 is an abundant number, since it is smaller than the sum of its proper divisors (672279340).

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

520779380 is a wasteful number, since it uses less digits than its factorization.

520779380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367199 (or 2367197 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 520779380 is about 22820.5911404591. The cubic root of 520779380 is about 804.5467041477.

The spelling of 520779380 in words is "five hundred twenty million, seven hundred seventy-nine thousand, three hundred eighty".