285489322 has 4 divisors (see below), whose sum is σ = 428233986. Its totient is φ = 142744660.

The previous prime is 285489319. The next prime is 285489343. The reversal of 285489322 is 223984582.

285489322 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 223984582 = 2 ⋅111992291.

It can be written as a sum of positive squares in only one way, i.e., 285238321 + 251001 = 16889^2 + 501^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71372329 + ... + 71372332.

Almost surely, 2^285489322 is an apocalyptic number.

285489322 is a deficient number, since it is larger than the sum of its proper divisors (142744664).

285489322 is a wasteful number, since it uses less digits than its factorization.

285489322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142744663.

The product of its digits is 276480, while the sum is 43.

The square root of 285489322 is about 16896.4292677477. The cubic root of 285489322 is about 658.4608471404.

The spelling of 285489322 in words is "two hundred eighty-five million, four hundred eighty-nine thousand, three hundred twenty-two".