285311612 has 12 divisors (see below), whose sum is σ = 528665760. Its totient is φ = 134264256.

The previous prime is 285311603. The next prime is 285311617. The reversal of 285311612 is 216113582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285311617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2097812 + ... + 2097947.

It is an arithmetic number, because the mean of its divisors is an integer number (44055480).

Almost surely, 2^285311612 is an apocalyptic number.

It is an amenable number.

285311612 is a deficient number, since it is larger than the sum of its proper divisors (243354148).

285311612 is a wasteful number, since it uses less digits than its factorization.

285311612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4195780 (or 4195778 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 285311612 is about 16891.1696457054. The cubic root of 285311612 is about 658.3241936170.

The spelling of 285311612 in words is "two hundred eighty-five million, three hundred eleven thousand, six hundred twelve".