509285220 has 24 divisors (see below), whose sum is σ = 1425998784. Its totient is φ = 135809376.

The previous prime is 509285219. The next prime is 509285221. The reversal of 509285220 is 22582905.

It is an interprime number because it is at equal distance from previous prime (509285219) and next prime (509285221).

It is not an unprimeable number, because it can be changed into a prime (509285221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4243984 + ... + 4244103.

It is an arithmetic number, because the mean of its divisors is an integer number (59416616).

Almost surely, 2^509285220 is an apocalyptic number.

It is an amenable number.

509285220 is an abundant number, since it is smaller than the sum of its proper divisors (916713564).

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

509285220 is a wasteful number, since it uses less digits than its factorization.

509285220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8488099 (or 8488097 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 509285220 is about 22567.3485372119. The cubic root of 509285220 is about 798.5835456348.

The spelling of 509285220 in words is "five hundred nine million, two hundred eighty-five thousand, two hundred twenty".