505856880 has 80 divisors (see below), whose sum is σ = 1742403360. Its totient is φ = 134894592.

The previous prime is 505856873. The next prime is 505856887. The reversal of 505856880 is 88658505.

505856880 is a `hidden beast` number, since 5 + 0 + 5 + 8 + 568 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (505856873) and next prime (505856887).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505856887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114937 + ... + 119256.

It is an arithmetic number, because the mean of its divisors is an integer number (21780042).

Almost surely, 2^505856880 is an apocalyptic number.

It is an amenable number.

505856880 is an abundant number, since it is smaller than the sum of its proper divisors (1236546480).

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

505856880 is a wasteful number, since it uses less digits than its factorization.

505856880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234215 (or 234203 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 45.

The square root of 505856880 is about 22491.2623033924. The cubic root of 505856880 is about 796.7875760147.

The spelling of 505856880 in words is "five hundred five million, eight hundred fifty-six thousand, eight hundred eighty".