285722132 has 24 divisors (see below), whose sum is σ = 513565920. Its totient is φ = 139037600.

The previous prime is 285722113. The next prime is 285722161. The reversal of 285722132 is 231227582.

It is a congruent number.

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, 17843 + ... + 29829.

It is an arithmetic number, because the mean of its divisors is an integer number (21398580).

Almost surely, 2^285722132 is an apocalyptic number.

It is an amenable number.

285722132 is a deficient number, since it is larger than the sum of its proper divisors (227843788).

285722132 is a wasteful number, since it uses less digits than its factorization.

285722132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12151 (or 12149 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 285722132 is about 16903.3171892383. The cubic root of 285722132 is about 658.6397850866.

The spelling of 285722132 in words is "two hundred eighty-five million, seven hundred twenty-two thousand, one hundred thirty-two".