285244132 has 24 divisors (see below), whose sum is σ = 503953632. Its totient is φ = 141264000.

The previous prime is 285244097. The next prime is 285244147. The reversal of 285244132 is 231442582.

It is a junction number, because it is equal to n+sod(n) for n = 285244094 and 285244103.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 260907 + ... + 261997.

It is an arithmetic number, because the mean of its divisors is an integer number (20998068).

Almost surely, 2^285244132 is an apocalyptic number.

It is an amenable number.

285244132 is a deficient number, since it is larger than the sum of its proper divisors (218709500).

285244132 is a wasteful number, since it uses less digits than its factorization.

285244132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659 (or 1657 counting only the distinct ones).

The product of its digits is 15360, while the sum is 31.

The square root of 285244132 is about 16889.1720341762. The cubic root of 285244132 is about 658.2722887085.

The spelling of 285244132 in words is "two hundred eighty-five million, two hundred forty-four thousand, one hundred thirty-two".