520444940 has 12 divisors (see below), whose sum is σ = 1092934416. Its totient is φ = 208177968.

The previous prime is 520444879. The next prime is 520444949. The reversal of 520444940 is 49444025.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 520444897 and 520444906.

It is not an unprimeable number, because it can be changed into a prime (520444949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13011104 + ... + 13011143.

It is an arithmetic number, because the mean of its divisors is an integer number (91077868).

Almost surely, 2^520444940 is an apocalyptic number.

It is an amenable number.

520444940 is an abundant number, since it is smaller than the sum of its proper divisors (572489476).

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

520444940 is a wasteful number, since it uses less digits than its factorization.

520444940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26022256 (or 26022254 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 520444940 is about 22813.2623708228. The cubic root of 520444940 is about 804.3744429629.

Adding to 520444940 its reverse (49444025), we get a palindrome (569888965).

The spelling of 520444940 in words is "five hundred twenty million, four hundred forty-four thousand, nine hundred forty".