285408212 has 12 divisors (see below), whose sum is σ = 499879380. Its totient is φ = 142585536.

The previous prime is 285408209. The next prime is 285408217. The reversal of 285408212 is 212804582.

It can be written as a sum of positive squares in 2 ways, for example, as 227587396 + 57820816 = 15086^2 + 7604^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285408217) 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, 24113 + ... + 33944.

It is an arithmetic number, because the mean of its divisors is an integer number (41656615).

Almost surely, 2^285408212 is an apocalyptic number.

It is an amenable number.

285408212 is a deficient number, since it is larger than the sum of its proper divisors (214471168).

285408212 is a wasteful number, since it uses less digits than its factorization.

285408212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59290 (or 59288 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 285408212 is about 16894.0288859703. The cubic root of 285408212 is about 658.3984830823.

The spelling of 285408212 in words is "two hundred eighty-five million, four hundred eight thousand, two hundred twelve".