505353820 has 12 divisors (see below), whose sum is σ = 1061243064. Its totient is φ = 202141520.

The previous prime is 505353809. The next prime is 505353839. The reversal of 505353820 is 28353505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12633826 + ... + 12633865.

It is an arithmetic number, because the mean of its divisors is an integer number (88436922).

Almost surely, 2^505353820 is an apocalyptic number.

It is an amenable number.

505353820 is an abundant number, since it is smaller than the sum of its proper divisors (555889244).

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

505353820 is a wasteful number, since it uses less digits than its factorization.

505353820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25267700 (or 25267698 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 505353820 is about 22480.0760674870. The cubic root of 505353820 is about 796.5233610301.

The spelling of 505353820 in words is "five hundred five million, three hundred fifty-three thousand, eight hundred twenty".