505268280 has 160 divisors (see below), whose sum is σ = 1852781040. Its totient is φ = 122480640.

The previous prime is 505268249. The next prime is 505268299. The reversal of 505268280 is 82862505.

505268280 is a `hidden beast` number, since 50 + 526 + 8 + 2 + 80 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 28552 + ... + 42728.

Almost surely, 2^505268280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505268280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (926390520).

505268280 is an abundant number, since it is smaller than the sum of its proper divisors (1347512760).

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

505268280 is a wasteful number, since it uses less digits than its factorization.

505268280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14211 (or 14198 counting only the distinct ones).

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

The square root of 505268280 is about 22478.1734133359. The cubic root of 505268280 is about 796.4784166431.

The spelling of 505268280 in words is "five hundred five million, two hundred sixty-eight thousand, two hundred eighty".