520156920 has 64 divisors (see below), whose sum is σ = 1642608000. Its totient is φ = 131407488.

The previous prime is 520156919. The next prime is 520156927. The reversal of 520156920 is 29651025.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520156927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111790 + ... + 116349.

It is an arithmetic number, because the mean of its divisors is an integer number (25665750).

Almost surely, 2^520156920 is an apocalyptic number.

It is an amenable number.

520156920 is an abundant number, since it is smaller than the sum of its proper divisors (1122451080).

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

520156920 is a wasteful number, since it uses less digits than its factorization.

520156920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228172 (or 228168 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 520156920 is about 22806.9489410574. The cubic root of 520156920 is about 804.2260323372.

The spelling of 520156920 in words is "five hundred twenty million, one hundred fifty-six thousand, nine hundred twenty".