285460220 has 12 divisors (see below), whose sum is σ = 599466504. Its totient is φ = 114184080.

The previous prime is 285460213. The next prime is 285460229. The reversal of 285460220 is 22064582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285460229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7136486 + ... + 7136525.

It is an arithmetic number, because the mean of its divisors is an integer number (49955542).

Almost surely, 2^285460220 is an apocalyptic number.

285460220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285460220 is an abundant number, since it is smaller than the sum of its proper divisors (314006284).

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

285460220 is a wasteful number, since it uses less digits than its factorization.

285460220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14273020 (or 14273018 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 285460220 is about 16895.5680579257. The cubic root of 285460220 is about 658.4384724813.

The spelling of 285460220 in words is "two hundred eighty-five million, four hundred sixty thousand, two hundred twenty".