285136996 has 9 divisors (see below), whose sum is σ = 499048851. Its totient is φ = 142551612.

The previous prime is 285136993. The next prime is 285137071. The reversal of 285136996 is 699631582.

The square root of 285136996 is 16886.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285136993) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 29551 + ... + 37993.

Almost surely, 2^285136996 is an apocalyptic number.

285136996 is the 16886-th square number.

It is an amenable number.

285136996 is a deficient number, since it is larger than the sum of its proper divisors (213911855).

285136996 is an frugal number, since it uses more digits than its factorization.

285136996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16890 (or 8445 counting only the distinct ones).

The product of its digits is 699840, while the sum is 49.

The cubic root of 285136996 is about 658.1898640023.

Multiplying 285136996 by its sum of digits (49), we get a square (13971712804 = 118202²).

The spelling of 285136996 in words is "two hundred eighty-five million, one hundred thirty-six thousand, nine hundred ninety-six".