520963140 has 24 divisors (see below), whose sum is σ = 1458696960. Its totient is φ = 138923488.

The previous prime is 520963117. The next prime is 520963169. The reversal of 520963140 is 41369025.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 520963098 and 520963107.

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, 4341300 + ... + 4341419.

It is an arithmetic number, because the mean of its divisors is an integer number (60779040).

Almost surely, 2^520963140 is an apocalyptic number.

It is an amenable number.

520963140 is an abundant number, since it is smaller than the sum of its proper divisors (937733820).

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

520963140 is a wasteful number, since it uses less digits than its factorization.

520963140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8682731 (or 8682729 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 520963140 is about 22824.6169737851. The cubic root of 520963140 is about 804.6413226639.

The spelling of 520963140 in words is "five hundred twenty million, nine hundred sixty-three thousand, one hundred forty".