285742395 has 24 divisors (see below), whose sum is σ = 496893696. Its totient is φ = 151901568.

The previous prime is 285742381. The next prime is 285742403. The reversal of 285742395 is 593247582.

It is not a de Polignac number, because 285742395 - 2¹⁰ = 285741371 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 285742395.

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 23 ways as a sum of consecutive naturals, for example, 3942 + ... + 24228.

It is an arithmetic number, because the mean of its divisors is an integer number (20703904).

Almost surely, 2^285742395 is an apocalyptic number.

285742395 is a deficient number, since it is larger than the sum of its proper divisors (211151301).

285742395 is a wasteful number, since it uses less digits than its factorization.

285742395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20611 (or 20608 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 285742395 is about 16903.9165580051. The cubic root of 285742395 is about 658.6553546452.

The spelling of 285742395 in words is "two hundred eighty-five million, seven hundred forty-two thousand, three hundred ninety-five".