285213292 has 24 divisors (see below), whose sum is σ = 614306336. Its totient is φ = 112831488.

The previous prime is 285213221. The next prime is 285213293. The reversal of 285213292 is 292312582.

It is not an unprimeable number, because it can be changed into a prime (285213293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391413 + ... + 392140.

Almost surely, 2^285213292 is an apocalyptic number.

It is an amenable number.

285213292 is an abundant number, since it is smaller than the sum of its proper divisors (329093044).

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

285213292 is a wasteful number, since it uses less digits than its factorization.

285213292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783577 (or 783575 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 285213292 is about 16888.2589984877. The cubic root of 285213292 is about 658.2485641783.

It can be divided in two parts, 28521 and 3292, that added together give a palindrome (31813).

The spelling of 285213292 in words is "two hundred eighty-five million, two hundred thirteen thousand, two hundred ninety-two".