285142645 has 16 divisors (see below), whose sum is σ = 355570560. Its totient is φ = 219252544.

The previous prime is 285142601. The next prime is 285142651. The reversal of 285142645 is 546241582.

It is a cyclic number.

It is not a de Polignac number, because 285142645 - 2⁹ = 285142133 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28584 + ... + 37246.

It is an arithmetic number, because the mean of its divisors is an integer number (22223160).

Almost surely, 2^285142645 is an apocalyptic number.

It is an amenable number.

285142645 is a deficient number, since it is larger than the sum of its proper divisors (70427915).

285142645 is a wasteful number, since it uses less digits than its factorization.

285142645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8924.

The product of its digits is 76800, while the sum is 37.

The square root of 285142645 is about 16886.1672679149. The cubic root of 285142645 is about 658.1942105563.

The spelling of 285142645 in words is "two hundred eighty-five million, one hundred forty-two thousand, six hundred forty-five".