505845920 has 48 divisors (see below), whose sum is σ = 1196519688. Its totient is φ = 202091520.

The previous prime is 505845919. The next prime is 505845959. The reversal of 505845920 is 29548505.

It can be written as a sum of positive squares in 4 ways, for example, as 371564176 + 134281744 = 19276^2 + 11588^2 .

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, 187622 + ... + 190298.

Almost surely, 2^505845920 is an apocalyptic number.

It is an amenable number.

505845920 is an abundant number, since it is smaller than the sum of its proper divisors (690673768).

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

505845920 is a wasteful number, since it uses less digits than its factorization.

505845920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3873 (or 3865 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 505845920 is about 22491.0186518975. The cubic root of 505845920 is about 796.7818215183.

The spelling of 505845920 in words is "five hundred five million, eight hundred forty-five thousand, nine hundred twenty".