285424965 has 80 divisors (see below), whose sum is σ = 592276608. Its totient is φ = 128801664.

The previous prime is 285424943. The next prime is 285424999. The reversal of 285424965 is 569424582.

285424965 is a `hidden beast` number, since 2 + 8 + 542 + 49 + 65 = 666.

It is not a de Polignac number, because 285424965 - 2⁵ = 285424933 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 285424965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 234699 + ... + 235911.

Almost surely, 2^285424965 is an apocalyptic number.

It is an amenable number.

285424965 is an abundant number, since it is smaller than the sum of its proper divisors (306851643).

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

285424965 is a wasteful number, since it uses less digits than its factorization.

285424965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320 (or 1311 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 285424965 is about 16894.5247047675. The cubic root of 285424965 is about 658.4113651386.

The spelling of 285424965 in words is "two hundred eighty-five million, four hundred twenty-four thousand, nine hundred sixty-five".