505055028 has 12 divisors (see below), whose sum is σ = 1178461760. Its totient is φ = 168351672.

The previous prime is 505055009. The next prime is 505055053. The reversal of 505055028 is 820550505.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 505054986 and 505055004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21043948 + ... + 21043971.

Almost surely, 2^505055028 is an apocalyptic number.

It is an amenable number.

505055028 is an abundant number, since it is smaller than the sum of its proper divisors (673406732).

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

505055028 is a wasteful number, since it uses less digits than its factorization.

505055028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42087926 (or 42087924 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 505055028 is about 22473.4293778230. The cubic root of 505055028 is about 796.3663477857.

The spelling of 505055028 in words is "five hundred five million, fifty-five thousand, twenty-eight".