505188330 has 32 divisors (see below), whose sum is σ = 1265169024. Its totient is φ = 128859456.

The previous prime is 505188329. The next prime is 505188361. The reversal of 505188330 is 33881505.

505188330 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 505188291 and 505188300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365389 + ... + 366768.

It is an arithmetic number, because the mean of its divisors is an integer number (39536532).

Almost surely, 2^505188330 is an apocalyptic number.

505188330 is an abundant number, since it is smaller than the sum of its proper divisors (759980694).

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

505188330 is a wasteful number, since it uses less digits than its factorization.

505188330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732190.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 505188330 is about 22476.3949511482. The cubic root of 505188330 is about 796.4364047648.

The spelling of 505188330 in words is "five hundred five million, one hundred eighty-eight thousand, three hundred thirty".