285997044 has 24 divisors (see below), whose sum is σ = 702449440. Its totient is φ = 90314784.

The previous prime is 285997003. The next prime is 285997051. The reversal of 285997044 is 440799582.

It is a junction number, because it is equal to n+sod(n) for n = 285996984 and 285997002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 626959 + ... + 627414.

Almost surely, 2^285997044 is an apocalyptic number.

It is an amenable number.

285997044 is an abundant number, since it is smaller than the sum of its proper divisors (416452396).

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

285997044 is a wasteful number, since it uses less digits than its factorization.

285997044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254399 (or 1254397 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 285997044 is about 16911.4471290898. The cubic root of 285997044 is about 658.8509575497.

The spelling of 285997044 in words is "two hundred eighty-five million, nine hundred ninety-seven thousand, forty-four".