505260828 has 30 divisors (see below), whose sum is σ = 1320852456. Its totient is φ = 168420168.

The previous prime is 505260809. The next prime is 505260829. The reversal of 505260828 is 828062505.

505260828 is a `hidden beast` number, since 50 + 526 + 0 + 82 + 8 = 666.

It is a super-2 number, since 2×505260828² = 510577008622491168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 505260792 and 505260801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505260829) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 779400 + ... + 780047.

Almost surely, 2^505260828 is an apocalyptic number.

It is an amenable number.

505260828 is an abundant number, since it is smaller than the sum of its proper divisors (815591628).

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

505260828 is a wasteful number, since it uses less digits than its factorization.

505260828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559463 (or 1559452 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 505260828 is about 22478.0076519250. The cubic root of 505260828 is about 796.4745009765.

The spelling of 505260828 in words is "five hundred five million, two hundred sixty thousand, eight hundred twenty-eight".