284492985 has 64 divisors (see below), whose sum is σ = 557107200. Its totient is φ = 121070592.

The previous prime is 284492969. The next prime is 284493007. The reversal of 284492985 is 589294482.

It is not a de Polignac number, because 284492985 - 2⁴ = 284492969 is a prime.

It is a super-3 number, since 3×284492985³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 116497 + ... + 118913.

It is an arithmetic number, because the mean of its divisors is an integer number (8704800).

Almost surely, 2^284492985 is an apocalyptic number.

It is an amenable number.

284492985 is a deficient number, since it is larger than the sum of its proper divisors (272614215).

284492985 is a wasteful number, since it uses less digits than its factorization.

284492985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510.

The product of its digits is 1658880, while the sum is 51.

The square root of 284492985 is about 16866.9198432909. The cubic root of 284492985 is about 657.6939608096.

The spelling of 284492985 in words is "two hundred eighty-four million, four hundred ninety-two thousand, nine hundred eighty-five".