285238283 has 4 divisors (see below), whose sum is σ = 311169048. Its totient is φ = 259307520.

The previous prime is 285238277. The next prime is 285238309. The reversal of 285238283 is 382832582.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 285238283 - 2²² = 281043979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 285238283.

It is not an unprimeable number, because it can be changed into a prime (285238243) 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, 12965366 + ... + 12965387.

It is an arithmetic number, because the mean of its divisors is an integer number (77792262).

Almost surely, 2^285238283 is an apocalyptic number.

285238283 is a deficient number, since it is larger than the sum of its proper divisors (25930765).

285238283 is a wasteful number, since it uses less digits than its factorization.

285238283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25930764.

The product of its digits is 184320, while the sum is 41.

The square root of 285238283 is about 16888.9988750074. The cubic root of 285238283 is about 658.2677893335.

The spelling of 285238283 in words is "two hundred eighty-five million, two hundred thirty-eight thousand, two hundred eighty-three".