285104238 has 8 divisors (see below), whose sum is σ = 570208488. Its totient is φ = 95034744.

The previous prime is 285104231. The next prime is 285104257. The reversal of 285104238 is 832401582.

It is a sphenic number, since it is the product of 3 distinct primes.

285104238 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 285104199 and 285104208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285104231) 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, 23758681 + ... + 23758692.

It is an arithmetic number, because the mean of its divisors is an integer number (71276061).

Almost surely, 2^285104238 is an apocalyptic number.

285104238 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

285104238 is a wasteful number, since it uses less digits than its factorization.

285104238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47517378.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 285104238 is about 16885.0299970121. The cubic root of 285104238 is about 658.1646576283.

The spelling of 285104238 in words is "two hundred eighty-five million, one hundred four thousand, two hundred thirty-eight".