520787940 has 48 divisors (see below), whose sum is σ = 1464668352. Its totient is φ = 138261376.

The previous prime is 520787933. The next prime is 520787951. The reversal of 520787940 is 49787025.

It is a junction number, because it is equal to n+sod(n) for n = 520787892 and 520787901.

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, 5499 + ... + 32738.

It is an arithmetic number, because the mean of its divisors is an integer number (30513924).

Almost surely, 2^520787940 is an apocalyptic number.

It is an amenable number.

520787940 is an abundant number, since it is smaller than the sum of its proper divisors (943880412).

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

520787940 is a wasteful number, since it uses less digits than its factorization.

520787940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38476 (or 38474 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 520787940 is about 22820.7786896065. The cubic root of 520787940 is about 804.5511122088.

The spelling of 520787940 in words is "five hundred twenty million, seven hundred eighty-seven thousand, nine hundred forty".