285227761 has 16 divisors (see below), whose sum is σ = 366315264. Its totient is φ = 215861184.

The previous prime is 285227711. The next prime is 285227773. The reversal of 285227761 is 167722582.

It is a happy number.

It is not a de Polignac number, because 285227761 - 2¹⁵ = 285194993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (285227711) by changing a digit.

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, 66046 + ... + 70231.

It is an arithmetic number, because the mean of its divisors is an integer number (22894704).

Almost surely, 2^285227761 is an apocalyptic number.

It is an amenable number.

285227761 is a deficient number, since it is larger than the sum of its proper divisors (81087503).

285227761 is a wasteful number, since it uses less digits than its factorization.

285227761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136320.

The product of its digits is 94080, while the sum is 40.

The square root of 285227761 is about 16888.6873675843. The cubic root of 285227761 is about 658.2596950731.

The spelling of 285227761 in words is "two hundred eighty-five million, two hundred twenty-seven thousand, seven hundred sixty-one".