285243078 has 8 divisors (see below), whose sum is σ = 570486168. Its totient is φ = 95081024.

The previous prime is 285243073. The next prime is 285243083. The reversal of 285243078 is 870342582.

It is an interprime number because it is at equal distance from previous prime (285243073) and next prime (285243083).

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

285243078 is an admirable number.

It is a super-2 number, since 2×285243078² = 162727227093828168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285243071) 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, 23770251 + ... + 23770262.

It is an arithmetic number, because the mean of its divisors is an integer number (71310771).

Almost surely, 2^285243078 is an apocalyptic number.

285243078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

285243078 is a wasteful number, since it uses less digits than its factorization.

285243078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47540518.

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 285243078 is about 16889.1408307232. The cubic root of 285243078 is about 658.2714779179.

The spelling of 285243078 in words is "two hundred eighty-five million, two hundred forty-three thousand, seventy-eight".