285211532 has 48 divisors (see below), whose sum is σ = 527235072. Its totient is φ = 134835840.

The previous prime is 285211529. The next prime is 285211541. The reversal of 285211532 is 235112582.

It is a junction number, because it is equal to n+sod(n) for n = 285211495 and 285211504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1749683 + ... + 1749845.

It is an arithmetic number, because the mean of its divisors is an integer number (10984064).

Almost surely, 2^285211532 is an apocalyptic number.

It is an amenable number.

285211532 is a deficient number, since it is larger than the sum of its proper divisors (242023540).

285211532 is a wasteful number, since it uses less digits than its factorization.

285211532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438 (or 436 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

The square root of 285211532 is about 16888.2068912007. The cubic root of 285211532 is about 658.2472101977.

The spelling of 285211532 in words is "two hundred eighty-five million, two hundred eleven thousand, five hundred thirty-two".