285274238 has 8 divisors (see below), whose sum is σ = 429078432. Its totient is φ = 142248096.

The previous prime is 285274219. The next prime is 285274273. The reversal of 285274238 is 832472582.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 285274195 and 285274204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193595 + ... + 195062.

It is an arithmetic number, because the mean of its divisors is an integer number (53634804).

Almost surely, 2^285274238 is an apocalyptic number.

285274238 is a deficient number, since it is larger than the sum of its proper divisors (143804194).

285274238 is a wasteful number, since it uses less digits than its factorization.

285274238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389026.

The product of its digits is 215040, while the sum is 41.

The square root of 285274238 is about 16890.0632917701. The cubic root of 285274238 is about 658.2954469393.

The spelling of 285274238 in words is "two hundred eighty-five million, two hundred seventy-four thousand, two hundred thirty-eight".