285236345 has 16 divisors (see below), whose sum is σ = 345522240. Its totient is φ = 226041024.

The previous prime is 285236339. The next prime is 285236359. The reversal of 285236345 is 543632582.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285236345 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 285236299 and 285236308.

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 15 ways as a sum of consecutive naturals, for example, 362042 + ... + 362828.

It is an arithmetic number, because the mean of its divisors is an integer number (21595140).

Almost surely, 2^285236345 is an apocalyptic number.

It is an amenable number.

285236345 is a deficient number, since it is larger than the sum of its proper divisors (60285895).

285236345 is a wasteful number, since it uses less digits than its factorization.

285236345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384.

The product of its digits is 172800, while the sum is 38.

The square root of 285236345 is about 16888.9415002836. The cubic root of 285236345 is about 658.2662985030.

The spelling of 285236345 in words is "two hundred eighty-five million, two hundred thirty-six thousand, three hundred forty-five".