285485878 has 8 divisors (see below), whose sum is σ = 436308768. Its totient is φ = 140049624.

The previous prime is 285485873. The next prime is 285485881. The reversal of 285485878 is 878584582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285485873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1346526 + ... + 1346737.

It is an arithmetic number, because the mean of its divisors is an integer number (54538596).

Almost surely, 2^285485878 is an apocalyptic number.

285485878 is a deficient number, since it is larger than the sum of its proper divisors (150822890).

285485878 is a wasteful number, since it uses less digits than its factorization.

285485878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2693318.

The product of its digits is 5734400, while the sum is 55.

The square root of 285485878 is about 16896.3273524160. The cubic root of 285485878 is about 658.4581993492.

The spelling of 285485878 in words is "two hundred eighty-five million, four hundred eighty-five thousand, eight hundred seventy-eight".