505130220 has 108 divisors (see below), whose sum is σ = 1782419184. Its totient is φ = 115456320.

The previous prime is 505130173. The next prime is 505130233. The reversal of 505130220 is 22031505.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 505130193 and 505130202.

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 35 ways as a sum of consecutive naturals, for example, 19816 + ... + 37455.

Almost surely, 2^505130220 is an apocalyptic number.

It is an amenable number.

505130220 is an abundant number, since it is smaller than the sum of its proper divisors (1277288964).

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

505130220 is a wasteful number, since it uses less digits than its factorization.

505130220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57300 (or 57288 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 505130220 is about 22475.1022244616. The cubic root of 505130220 is about 796.4058665204.

Adding to 505130220 its reverse (22031505), we get a palindrome (527161725).

The spelling of 505130220 in words is "five hundred five million, one hundred thirty thousand, two hundred twenty".