285313538 has 8 divisors (see below), whose sum is σ = 450495120. Its totient is φ = 135148500.

The previous prime is 285313529. The next prime is 285313541. The reversal of 285313538 is 835313582.

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

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 7508251 = 285313538 / (2 + 8 + 5 + 3 + 1 + 3 + 5 + 3 + 8).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3754088 + ... + 3754163.

It is an arithmetic number, because the mean of its divisors is an integer number (56311890).

Almost surely, 2^285313538 is an apocalyptic number.

285313538 is a deficient number, since it is larger than the sum of its proper divisors (165181582).

285313538 is a wasteful number, since it uses less digits than its factorization.

285313538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7508272.

The product of its digits is 86400, while the sum is 38.

The square root of 285313538 is about 16891.2266576469. The cubic root of 285313538 is about 658.3256749559.

The spelling of 285313538 in words is "two hundred eighty-five million, three hundred thirteen thousand, five hundred thirty-eight".