285104880 has 160 divisors (see below), whose sum is σ = 1033862400. Its totient is φ = 72016128.

The previous prime is 285104879. The next prime is 285104891. The reversal of 285104880 is 88401582.

285104880 is a `hidden beast` number, since 28 + 510 + 48 + 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 31 ways as a sum of consecutive naturals, for example, 37567 + ... + 44513.

It is an arithmetic number, because the mean of its divisors is an integer number (6461640).

Almost surely, 2^285104880 is an apocalyptic number.

285104880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285104880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (516931200).

285104880 is an abundant number, since it is smaller than the sum of its proper divisors (748757520).

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

285104880 is a wasteful number, since it uses less digits than its factorization.

285104880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6988 (or 6976 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 285104880 is about 16885.0490079241. The cubic root of 285104880 is about 658.1651516481.

The spelling of 285104880 in words is "two hundred eighty-five million, one hundred four thousand, eight hundred eighty".