285695220 has 48 divisors (see below), whose sum is σ = 807730560. Its totient is φ = 75444096.

The previous prime is 285695219. The next prime is 285695233. The reversal of 285695220 is 22596582.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16935 + ... + 29294.

It is an arithmetic number, because the mean of its divisors is an integer number (16827720).

Almost surely, 2^285695220 is an apocalyptic number.

285695220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285695220 is an abundant number, since it is smaller than the sum of its proper divisors (522035340).

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

285695220 is a wasteful number, since it uses less digits than its factorization.

285695220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46344 (or 46342 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 285695220 is about 16902.5211137274. The cubic root of 285695220 is about 658.6191054723.

The spelling of 285695220 in words is "two hundred eighty-five million, six hundred ninety-five thousand, two hundred twenty".