285508742 has 16 divisors (see below), whose sum is σ = 434382912. Its totient is φ = 140727720.

The previous prime is 285508709. The next prime is 285508781. The reversal of 285508742 is 247805582.

It is a self number, because there is not a number n which added to its sum of digits gives 285508742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41993 + ... + 48315.

It is an arithmetic number, because the mean of its divisors is an integer number (27148932).

Almost surely, 2^285508742 is an apocalyptic number.

285508742 is a deficient number, since it is larger than the sum of its proper divisors (148874170).

285508742 is a wasteful number, since it uses less digits than its factorization.

285508742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6643.

The product of its (nonzero) digits is 179200, while the sum is 41.

The square root of 285508742 is about 16897.0039356094. The cubic root of 285508742 is about 658.4757770855.

The spelling of 285508742 in words is "two hundred eighty-five million, five hundred eight thousand, seven hundred forty-two".