505281264 has 40 divisors (see below), whose sum is σ = 1313643600. Its totient is φ = 167351808.

The previous prime is 505281223. The next prime is 505281289. The reversal of 505281264 is 462182505.

It is a congruent number.

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, 25989 + ... + 41060.

It is an arithmetic number, because the mean of its divisors is an integer number (32841090).

Almost surely, 2^505281264 is an apocalyptic number.

It is an amenable number.

505281264 is an abundant number, since it is smaller than the sum of its proper divisors (808362336).

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

505281264 is a wasteful number, since it uses less digits than its factorization.

505281264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67217 (or 67211 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 505281264 is about 22478.4622249833. The cubic root of 505281264 is about 796.4852390168.

The spelling of 505281264 in words is "five hundred five million, two hundred eighty-one thousand, two hundred sixty-four".