285384307 has 4 divisors (see below), whose sum is σ = 307336960. Its totient is φ = 263431656.

The previous prime is 285384283. The next prime is 285384311. The reversal of 285384307 is 703483582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 703483582 = 2 ⋅351741791.

It is a cyclic number.

It is not a de Polignac number, because 285384307 - 2¹⁹ = 284860019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 285384307.

It is not an unprimeable number, because it can be changed into a prime (285384377) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10976307 + ... + 10976332.

It is an arithmetic number, because the mean of its divisors is an integer number (76834240).

Almost surely, 2^285384307 is an apocalyptic number.

285384307 is a deficient number, since it is larger than the sum of its proper divisors (21952653).

285384307 is a wasteful number, since it uses less digits than its factorization.

285384307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21952652.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 285384307 is about 16893.3213726609. The cubic root of 285384307 is about 658.3801006923.

The spelling of 285384307 in words is "two hundred eighty-five million, three hundred eighty-four thousand, three hundred seven".