505307800 has 48 divisors (see below), whose sum is σ = 1178987040. Its totient is φ = 201409920.

The previous prime is 505307783. The next prime is 505307807. The reversal of 505307800 is 8703505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505307807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54289 + ... + 62911.

It is an arithmetic number, because the mean of its divisors is an integer number (24562230).

Almost surely, 2^505307800 is an apocalyptic number.

505307800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505307800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (589493520).

505307800 is an abundant number, since it is smaller than the sum of its proper divisors (673679240).

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

505307800 is a wasteful number, since it uses less digits than its factorization.

505307800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8932 (or 8923 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 505307800 is about 22479.0524711341. The cubic root of 505307800 is about 796.4991818534.

The spelling of 505307800 in words is "five hundred five million, three hundred seven thousand, eight hundred".