285312434 has 12 divisors (see below), whose sum is σ = 470412222. Its totient is φ = 129687360.

The previous prime is 285312431. The next prime is 285312473. The reversal of 285312434 is 434213582.

It can be written as a sum of positive squares in only one way, i.e., 263250625 + 22061809 = 16225^2 + 4697^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 285312434.

It is not an unprimeable number, because it can be changed into a prime (285312431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 589247 + ... + 589730.

Almost surely, 2^285312434 is an apocalyptic number.

285312434 is a deficient number, since it is larger than the sum of its proper divisors (185099788).

285312434 is a wasteful number, since it uses less digits than its factorization.

285312434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179001 (or 1178990 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 285312434 is about 16891.1939779283. The cubic root of 285312434 is about 658.3248258403.

The spelling of 285312434 in words is "two hundred eighty-five million, three hundred twelve thousand, four hundred thirty-four".