520207780 has 12 divisors (see below), whose sum is σ = 1092436380. Its totient is φ = 208083104.

The previous prime is 520207733. The next prime is 520207789. The reversal of 520207780 is 87702025.

520207780 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 188457984 + 331749796 = 13728^2 + 18214^2 .

It is a super-2 number, since 2×520207780² = 541232268745056800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (520207789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13005175 + ... + 13005214.

It is an arithmetic number, because the mean of its divisors is an integer number (91036365).

Almost surely, 2^520207780 is an apocalyptic number.

It is an amenable number.

520207780 is an abundant number, since it is smaller than the sum of its proper divisors (572228600).

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

520207780 is a wasteful number, since it uses less digits than its factorization.

520207780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26010398 (or 26010396 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 520207780 is about 22808.0639248490. The cubic root of 520207780 is about 804.2522434038.

The spelling of 520207780 in words is "five hundred twenty million, two hundred seven thousand, seven hundred eighty".