285277485 has 32 divisors (see below), whose sum is σ = 466542720. Its totient is φ = 148819968.

The previous prime is 285277481. The next prime is 285277537. The reversal of 285277485 is 584772582.

It is not a de Polignac number, because 285277485 - 2² = 285277481 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285277481) 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 31 ways as a sum of consecutive naturals, for example, 128394 + ... + 130596.

It is an arithmetic number, because the mean of its divisors is an integer number (14579460).

Almost surely, 2^285277485 is an apocalyptic number.

It is an amenable number.

285277485 is a deficient number, since it is larger than the sum of its proper divisors (181265235).

285277485 is a wasteful number, since it uses less digits than its factorization.

285277485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397.

The product of its digits is 1254400, while the sum is 48.

The square root of 285277485 is about 16890.1594131021. The cubic root of 285277485 is about 658.2979445094.

The spelling of 285277485 in words is "two hundred eighty-five million, two hundred seventy-seven thousand, four hundred eighty-five".