285253018 has 8 divisors (see below), whose sum is σ = 427960980. Its totient is φ = 142599360.

The previous prime is 285252983. The next prime is 285253037. The reversal of 285253018 is 810352582.

It can be written as a sum of positive squares in 2 ways, for example, as 233081289 + 52171729 = 15267^2 + 7223^2 .

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

It is an unprimeable number.

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, 4228 + ... + 24256.

Almost surely, 2^285253018 is an apocalyptic number.

285253018 is a deficient number, since it is larger than the sum of its proper divisors (142707962).

285253018 is a wasteful number, since it uses less digits than its factorization.

285253018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27152.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 285253018 is about 16889.4351000855. The cubic root of 285253018 is about 658.2791241945.

The spelling of 285253018 in words is "two hundred eighty-five million, two hundred fifty-three thousand, eighteen".