285130239 has 16 divisors (see below), whose sum is σ = 406693728. Its totient is φ = 177057792.

The previous prime is 285130231. The next prime is 285130243. The reversal of 285130239 is 932031582.

It is not a de Polignac number, because 285130239 - 2³ = 285130231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285130231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23872 + ... + 33765.

It is an arithmetic number, because the mean of its divisors is an integer number (25418358).

Almost surely, 2^285130239 is an apocalyptic number.

285130239 is a deficient number, since it is larger than the sum of its proper divisors (121563489).

285130239 is a wasteful number, since it uses less digits than its factorization.

285130239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57754.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 285130239 is about 16885.7999218278. The cubic root of 285130239 is about 658.1846648360.

The spelling of 285130239 in words is "two hundred eighty-five million, one hundred thirty thousand, two hundred thirty-nine".