505298816 has 32 divisors (see below), whose sum is σ = 1098166680. Its totient is φ = 229680640.

The previous prime is 505298809. The next prime is 505298831. The reversal of 505298816 is 618892505.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a zygodrome in base 2.

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, 178031 + ... + 180846.

Almost surely, 2^505298816 is an apocalyptic number.

It is an amenable number.

505298816 is an abundant number, since it is smaller than the sum of its proper divisors (592867864).

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

505298816 is a wasteful number, since it uses less digits than its factorization.

505298816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358902 (or 358890 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 44.

The square root of 505298816 is about 22478.8526397590. The cubic root of 505298816 is about 796.4944614361.

The spelling of 505298816 in words is "five hundred five million, two hundred ninety-eight thousand, eight hundred sixteen".