505712228 has 24 divisors (see below), whose sum is σ = 1016730624. Its totient is φ = 215596800.

The previous prime is 505712219. The next prime is 505712257. The reversal of 505712228 is 822217505.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 505712194 and 505712203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41933 + ... + 52628.

It is an arithmetic number, because the mean of its divisors is an integer number (42363776).

Almost surely, 2^505712228 is an apocalyptic number.

It is an amenable number.

505712228 is an abundant number, since it is smaller than the sum of its proper divisors (511018396).

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

505712228 is a wasteful number, since it uses less digits than its factorization.

505712228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94763 (or 94761 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 505712228 is about 22488.0463357758. The cubic root of 505712228 is about 796.7116204702.

The spelling of 505712228 in words is "five hundred five million, seven hundred twelve thousand, two hundred twenty-eight".