285438265 has 16 divisors (see below), whose sum is σ = 393867648. Its totient is φ = 194524416.

The previous prime is 285438259. The next prime is 285438277. The reversal of 285438265 is 562834582.

It is a cyclic number.

It is not a de Polignac number, because 285438265 - 2⁷ = 285438137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19312 + ... + 30721.

It is an arithmetic number, because the mean of its divisors is an integer number (24616728).

Almost surely, 2^285438265 is an apocalyptic number.

It is an amenable number.

285438265 is a deficient number, since it is larger than the sum of its proper divisors (108429383).

285438265 is a wasteful number, since it uses less digits than its factorization.

285438265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50208.

The product of its digits is 460800, while the sum is 43.

The square root of 285438265 is about 16894.9183188318. The cubic root of 285438265 is about 658.4215916852.

The spelling of 285438265 in words is "two hundred eighty-five million, four hundred thirty-eight thousand, two hundred sixty-five".