505293028 has 6 divisors (see below), whose sum is σ = 884262806. Its totient is φ = 252646512.

The previous prime is 505293017. The next prime is 505293031. The reversal of 505293028 is 820392505.

It can be written as a sum of positive squares in only one way, i.e., 496754944 + 8538084 = 22288^2 + 2922^2 .

It is a junction number, because it is equal to n+sod(n) for n = 505292984 and 505293002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63161625 + ... + 63161632.

Almost surely, 2^505293028 is an apocalyptic number.

It is an amenable number.

505293028 is a deficient number, since it is larger than the sum of its proper divisors (378969778).

505293028 is a wasteful number, since it uses less digits than its factorization.

505293028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126323261 (or 126323259 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 505293028 is about 22478.7238961646. The cubic root of 505293028 is about 796.4914202472.

The spelling of 505293028 in words is "five hundred five million, two hundred ninety-three thousand, twenty-eight".