505326864 has 80 divisors (see below), whose sum is σ = 1514252288. Its totient is φ = 142217856.

The previous prime is 505326863. The next prime is 505326881. The reversal of 505326864 is 468623505.

It is not an unprimeable number, because it can be changed into a prime (505326863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11289 + ... + 33735.

Almost surely, 2^505326864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505326864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (757126144).

505326864 is an abundant number, since it is smaller than the sum of its proper divisors (1008925424).

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

505326864 is a wasteful number, since it uses less digits than its factorization.

505326864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22532 (or 22526 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The square root of 505326864 is about 22479.4765063602. The cubic root of 505326864 is about 796.5091983684.

The spelling of 505326864 in words is "five hundred five million, three hundred twenty-six thousand, eight hundred sixty-four".