285020386 has 32 divisors (see below), whose sum is σ = 512962560. Its totient is φ = 116197200.

The previous prime is 285020377. The next prime is 285020399. The reversal of 285020386 is 683020582.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20041 + ... + 31171.

It is an arithmetic number, because the mean of its divisors is an integer number (16030080).

Almost surely, 2^285020386 is an apocalyptic number.

285020386 is a deficient number, since it is larger than the sum of its proper divisors (227942174).

285020386 is a wasteful number, since it uses less digits than its factorization.

285020386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11230.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 285020386 is about 16882.5467865485. The cubic root of 285020386 is about 658.1001270381.

The spelling of 285020386 in words is "two hundred eighty-five million, twenty thousand, three hundred eighty-six".