520156432 has 20 divisors (see below), whose sum is σ = 1009246540. Its totient is φ = 259705728.

The previous prime is 520156411. The next prime is 520156433. The reversal of 520156432 is 234651025.

It can be written as a sum of positive squares in 2 ways, for example, as 303595776 + 216560656 = 17424^2 + 14716^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 520156432.

It is not an unprimeable number, because it can be changed into a prime (520156433) 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, 11583 + ... + 34270.

It is an arithmetic number, because the mean of its divisors is an integer number (50462327).

Almost surely, 2^520156432 is an apocalyptic number.

It is an amenable number.

520156432 is a deficient number, since it is larger than the sum of its proper divisors (489090108).

520156432 is a wasteful number, since it uses less digits than its factorization.

520156432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46570 (or 46564 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 520156432 is about 22806.9382425612. The cubic root of 520156432 is about 804.2257808346.

The spelling of 520156432 in words is "five hundred twenty million, one hundred fifty-six thousand, four hundred thirty-two".