504991800 has 192 divisors, whose sum is σ = 1842069600. Its totient is φ = 126720000.

The previous prime is 504991787. The next prime is 504991849. The reversal of 504991800 is 8199405.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89050 + ... + 94550.

Almost surely, 2^504991800 is an apocalyptic number.

504991800 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 504991800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (921034800).

504991800 is an abundant number, since it is smaller than the sum of its proper divisors (1337077800).

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

504991800 is a wasteful number, since it uses less digits than its factorization.

504991800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5543 (or 5528 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 504991800 is about 22472.0226058982. The cubic root of 504991800 is about 796.3331139464. Note that the first 3 decimals are identical.

The spelling of 504991800 in words is "five hundred four million, nine hundred ninety-one thousand, eight hundred".